21 files changed, 1871 insertions, 0 deletions

diff --git a/Differentiator/Differentiator-cache.lib b/Differentiator/Differentiator-cache.lib
new file mode 100644
index 0000000..380f2ca
--- /dev/null
+++ b/Differentiator/Differentiator-cache.lib
@@ -0,0 +1,107 @@
+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# C
+#
+DEF C C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "C" 25 -100 50 H V L CNN
+F2 "" 38 -150 30 H V C CNN
+F3 "" 0 0 60 H V C CNN
+$FPLIST
+ C?
+ C_????_*
+ C_????
+ SMD*_c
+ Capacitor*
+$ENDFPLIST
+DRAW
+P 2 0 1 20  -80 -30  80 -30 N
+P 2 0 1 20  -80 30  80 30 N
+X ~ 1 0 150 110 D 40 40 1 1 P
+X ~ 2 0 -150 110 U 40 40 1 1 P
+ENDDRAW
+ENDDEF
+#
+# GND
+#
+DEF GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H V C CNN
+F3 "" 0 0 50 H V C CNN
+DRAW
+P 6 0 1 0  0 0  0 -50  50 -50  0 -100  -50 -50  0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# R
+#
+DEF R R 0 0 N Y 1 F N
+F0 "R" 50 130 50 H V C CNN
+F1 "R" 50 50 50 H V C CNN
+F2 "" 50 -20 30 H V C CNN
+F3 "" 50 50 30 V V C CNN
+$FPLIST
+ R_*
+ Resistor_*
+$ENDFPLIST
+DRAW
+S 150 10 -50 90 0 1 10 N
+X ~ 1 -100 50 50 R 60 60 1 1 P
+X ~ 2 200 50 50 L 60 60 1 1 P
+ENDDRAW
+ENDDEF
+#
+# UA741
+#
+DEF UA741 X 0 40 Y Y 1 F N
+F0 "X" 150 0 60 H V C CNN
+F1 "UA741" 250 -150 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+P 4 0 1 0  0 150  0 -150  350 0  0 150 N
+X + 1 -200 100 200 R 50 50 1 1 I
+X - 2 -200 -100 200 R 50 50 1 1 I
+X ~ 3 550 0 200 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# plot_v1
+#
+DEF plot_v1 U 0 40 Y Y 1 F N
+F0 "U" 0 500 60 H V C CNN
+F1 "plot_v1" 200 350 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+C 0 500 100 0 1 0 N
+X ~ ~ 0 200 200 U 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
+# pwl
+#
+DEF pwl v 0 40 Y Y 1 F N
+F0 "v" -200 100 60 H V C CNN
+F1 "pwl" -250 -50 60 H V C CNN
+F2 "R1" -300 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+$FPLIST
+ 1_pin
+$ENDFPLIST
+DRAW
+A -1144 -561 1253 291 240 0 1 0 N -50 50 0 -50
+A -765 421 941 -300 -232 0 1 0 N 50 -50 100 50
+A -75 -700 750 919 880 0 1 0 N -100 50 -50 50
+A 25 450 501 -928 -871 0 1 0 N 0 -50 50 -50
+A 1096 -609 1366 1511 1558 0 1 0 N -100 50 -150 -50
+C 0 0 150 0 1 0 N
+X + 1 0 450 300 D 50 0 1 1 I
+X - 2 0 -450 300 U 50 0 1 1 I
+ENDDRAW
+ENDDEF
+#
+#End Library
diff --git a/Differentiator/Differentiator.bak b/Differentiator/Differentiator.bak
new file mode 100644
index 0000000..8a17ece
--- /dev/null
+++ b/Differentiator/Differentiator.bak
@@ -0,0 +1,197 @@
+EESchema Schematic File Version 2
+LIBS:eSim_Analog
+LIBS:eSim_Devices
+LIBS:eSim_Digital
+LIBS:eSim_Hybrid
+LIBS:eSim_Miscellaneous
+LIBS:eSim_Power
+LIBS:eSim_Sources
+LIBS:eSim_Subckt
+LIBS:eSim_User
+LIBS:adc-dac
+LIBS:memory
+LIBS:xilinx
+LIBS:microcontrollers
+LIBS:dsp
+LIBS:microchip
+LIBS:analog_switches
+LIBS:motorola
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:power
+LIBS:device
+LIBS:transistors
+LIBS:conn
+LIBS:linear
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+EELAYER 25 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L UA741 X1
+U 1 1 56B85B7E
+P 6050 2950
+F 0 "X1" H 6200 2950 60  0000 C CNN
+F 1 "UA741" H 6300 2800 60  0000 C CNN
+F 2 "" H 6050 2950 60  0000 C CNN
+F 3 "" H 6050 2950 60  0000 C CNN
+	1    6050 2950
+	1    0    0    1   
+$EndComp
+$Comp
+L R R3
+U 1 1 56B85BC9
+P 6150 2350
+F 0 "R3" H 6200 2480 50  0000 C CNN
+F 1 "10k" H 6200 2400 50  0000 C CNN
+F 2 "" H 6200 2330 30  0000 C CNN
+F 3 "" V 6200 2400 30  0000 C CNN
+	1    6150 2350
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R1
+U 1 1 56B85C04
+P 4900 2900
+F 0 "R1" H 4950 3030 50  0000 C CNN
+F 1 "100k" H 4950 2950 50  0000 C CNN
+F 2 "" H 4950 2880 30  0000 C CNN
+F 3 "" V 4950 2950 30  0000 C CNN
+	1    4900 2900
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R2
+U 1 1 56B85C6B
+P 5500 3150
+F 0 "R2" H 5550 3280 50  0000 C CNN
+F 1 "1k" H 5550 3200 50  0000 C CNN
+F 2 "" H 5550 3130 30  0000 C CNN
+F 3 "" V 5550 3200 30  0000 C CNN
+	1    5500 3150
+	0    1    1    0   
+$EndComp
+$Comp
+L R R4
+U 1 1 56B85CD1
+P 7150 3000
+F 0 "R4" H 7200 3130 50  0000 C CNN
+F 1 "1k" H 7200 3050 50  0000 C CNN
+F 2 "" H 7200 2980 30  0000 C CNN
+F 3 "" V 7200 3050 30  0000 C CNN
+	1    7150 3000
+	1    0    0    -1  
+$EndComp
+$Comp
+L C C1
+U 1 1 56B85D7C
+P 5550 2850
+F 0 "C1" H 5575 2950 50  0000 L CNN
+F 1 "20n" H 5575 2750 50  0000 L CNN
+F 2 "" H 5588 2700 30  0000 C CNN
+F 3 "" H 5550 2850 60  0000 C CNN
+	1    5550 2850
+	0    -1   -1   0   
+$EndComp
+$Comp
+L pwl v1
+U 1 1 56B85E24
+P 4500 3300
+F 0 "v1" H 4300 3400 60  0000 C CNN
+F 1 "pwl" H 4250 3250 60  0000 C CNN
+F 2 "R1" H 4200 3300 60  0000 C CNN
+F 3 "" H 4500 3300 60  0000 C CNN
+	1    4500 3300
+	1    0    0    -1  
+$EndComp
+$Comp
+L GND #PWR01
+U 1 1 56B85ECF
+P 4500 3750
+F 0 "#PWR01" H 4500 3500 50  0001 C CNN
+F 1 "GND" H 4500 3600 50  0000 C CNN
+F 2 "" H 4500 3750 50  0000 C CNN
+F 3 "" H 4500 3750 50  0000 C CNN
+	1    4500 3750
+	1    0    0    -1  
+$EndComp
+$Comp
+L GND #PWR02
+U 1 1 56B85EF6
+P 5550 3350
+F 0 "#PWR02" H 5550 3100 50  0001 C CNN
+F 1 "GND" H 5550 3200 50  0000 C CNN
+F 2 "" H 5550 3350 50  0000 C CNN
+F 3 "" H 5550 3350 50  0000 C CNN
+	1    5550 3350
+	1    0    0    -1  
+$EndComp
+$Comp
+L GND #PWR03
+U 1 1 56B85F16
+P 7350 2950
+F 0 "#PWR03" H 7350 2700 50  0001 C CNN
+F 1 "GND" H 7350 2800 50  0000 C CNN
+F 2 "" H 7350 2950 50  0000 C CNN
+F 3 "" H 7350 2950 50  0000 C CNN
+	1    7350 2950
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	4500 2850 4800 2850
+Wire Wire Line
+	5100 2850 5400 2850
+Wire Wire Line
+	5700 2850 5850 2850
+Wire Wire Line
+	5850 3050 5550 3050
+Wire Wire Line
+	6600 2950 7050 2950
+Wire Wire Line
+	6350 2300 6800 2300
+Wire Wire Line
+	6800 2300 6800 2950
+Connection ~ 6800 2950
+Wire Wire Line
+	6050 2300 5750 2300
+Wire Wire Line
+	5750 2300 5750 2850
+Connection ~ 5750 2850
+Text GLabel 4550 2700 0    60   Input ~ 0
+in
+Text GLabel 6950 2800 2    60   Input ~ 0
+out
+Wire Wire Line
+	4550 2700 4600 2700
+Wire Wire Line
+	4600 2700 4600 2850
+Connection ~ 4600 2850
+Wire Wire Line
+	6950 2800 6900 2800
+Wire Wire Line
+	6900 2800 6900 2950
+Connection ~ 6900 2950
+$EndSCHEMATC
diff --git a/Differentiator/Differentiator.cir b/Differentiator/Differentiator.cir
new file mode 100644
index 0000000..36d79b1
--- /dev/null
+++ b/Differentiator/Differentiator.cir
@@ -0,0 +1,19 @@
+* /home/fossee/eSim-Workspace/Differentiator/Differentiator.cir
+
+* EESchema Netlist Version 1.1 (Spice format) creation date: Mon Feb 29 21:32:25 2016
+
+* To exclude a component from the Spice Netlist add [Spice_Netlist_Enabled] user FIELD set to: N
+* To reorder the component spice node sequence add [Spice_Node_Sequence] user FIELD and define sequence: 2,1,0
+
+* Sheet Name: /
+X1  Net-_R2-Pad1_ Net-_C1-Pad2_ out UA741		
+R3  Net-_C1-Pad2_ out 10k		
+R1  in Net-_C1-Pad1_ 100k		
+R2  Net-_R2-Pad1_ GND 1k		
+R4  out GND 1k		
+C1  Net-_C1-Pad1_ Net-_C1-Pad2_ 20n		
+v1  in GND pwl		
+U1  in plot_v1		
+U2  out plot_v1		
+
+.end
diff --git a/Differentiator/Differentiator.cir.out b/Differentiator/Differentiator.cir.out
new file mode 100644
index 0000000..61fac7e
--- /dev/null
+++ b/Differentiator/Differentiator.cir.out
@@ -0,0 +1,23 @@
+* /home/fossee/esim-workspace/differentiator/differentiator.cir
+
+.include ua741.sub
+x1 net-_r2-pad1_ net-_c1-pad2_ out ua741
+r3  net-_c1-pad2_ out 10k
+r1  in net-_c1-pad1_ 100k
+r2  net-_r2-pad1_ gnd 1k
+r4  out gnd 1k
+c1  net-_c1-pad1_ net-_c1-pad2_ 20n
+v1  in gnd pwl(0m 0 0.5m 5 25m 5 25.5m -5 50m -5 50.5m 5 75m 5 75.5m -5 100m -5)
+* u1  in plot_v1
+* u2  out plot_v1
+.tran 10e-03 100e-03 0e-03
+
+* Control Statements 
+.control
+run
+print allv > plot_data_v.txt
+print alli > plot_data_i.txt
+plot v(in)
+plot v(out)
+.endc
+.end
diff --git a/Differentiator/Differentiator.pro b/Differentiator/Differentiator.pro
new file mode 100644
index 0000000..ad58869
--- /dev/null
+++ b/Differentiator/Differentiator.pro
@@ -0,0 +1,71 @@
+update=Mon Feb 29 21:31:36 2016
+version=1
+last_client=eeschema
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+LibName1=eSim_Analog
+LibName2=eSim_Devices
+LibName3=eSim_Digital
+LibName4=eSim_Hybrid
+LibName5=eSim_Miscellaneous
+LibName6=eSim_Plot
+LibName7=eSim_Power
+LibName8=eSim_Sources
+LibName9=eSim_Subckt
+LibName10=eSim_User
+LibName11=adc-dac
+LibName12=memory
+LibName13=xilinx
+LibName14=microcontrollers
+LibName15=dsp
+LibName16=microchip
+LibName17=analog_switches
+LibName18=motorola
+LibName19=texas
+LibName20=intel
+LibName21=audio
+LibName22=interface
+LibName23=digital-audio
+LibName24=philips
+LibName25=display
+LibName26=cypress
+LibName27=siliconi
+LibName28=opto
+LibName29=atmel
+LibName30=contrib
+LibName31=power
+LibName32=device
+LibName33=transistors
+LibName34=conn
+LibName35=linear
+LibName36=regul
+LibName37=74xx
+LibName38=cmos4000
diff --git a/Differentiator/Differentiator.proj b/Differentiator/Differentiator.proj
new file mode 100644
index 0000000..204ec94
--- /dev/null
+++ b/Differentiator/Differentiator.proj
@@ -0,0 +1 @@
+schematicFile Differentiator.sch
diff --git a/Differentiator/Differentiator.sch b/Differentiator/Differentiator.sch
new file mode 100644
index 0000000..e8918a9
--- /dev/null
+++ b/Differentiator/Differentiator.sch
@@ -0,0 +1,223 @@
+EESchema Schematic File Version 2
+LIBS:eSim_Analog
+LIBS:eSim_Devices
+LIBS:eSim_Digital
+LIBS:eSim_Hybrid
+LIBS:eSim_Miscellaneous
+LIBS:eSim_Plot
+LIBS:eSim_Power
+LIBS:eSim_Sources
+LIBS:eSim_Subckt
+LIBS:eSim_User
+LIBS:adc-dac
+LIBS:memory
+LIBS:xilinx
+LIBS:microcontrollers
+LIBS:dsp
+LIBS:microchip
+LIBS:analog_switches
+LIBS:motorola
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:power
+LIBS:device
+LIBS:transistors
+LIBS:conn
+LIBS:linear
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+LIBS:Differentiator-cache
+EELAYER 25 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
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+U 1 1 56B85B7E
+P 6050 2950
+F 0 "X1" H 6200 2950 60  0000 C CNN
+F 1 "UA741" H 6300 2800 60  0000 C CNN
+F 2 "" H 6050 2950 60  0000 C CNN
+F 3 "" H 6050 2950 60  0000 C CNN
+	1    6050 2950
+	1    0    0    1   
+$EndComp
+$Comp
+L R R3
+U 1 1 56B85BC9
+P 6150 2350
+F 0 "R3" H 6200 2480 50  0000 C CNN
+F 1 "10k" H 6200 2400 50  0000 C CNN
+F 2 "" H 6200 2330 30  0000 C CNN
+F 3 "" V 6200 2400 30  0000 C CNN
+	1    6150 2350
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R1
+U 1 1 56B85C04
+P 4900 2900
+F 0 "R1" H 4950 3030 50  0000 C CNN
+F 1 "100k" H 4950 2950 50  0000 C CNN
+F 2 "" H 4950 2880 30  0000 C CNN
+F 3 "" V 4950 2950 30  0000 C CNN
+	1    4900 2900
+	1    0    0    -1  
+$EndComp
+$Comp
+L R R2
+U 1 1 56B85C6B
+P 5500 3150
+F 0 "R2" H 5550 3280 50  0000 C CNN
+F 1 "1k" H 5550 3200 50  0000 C CNN
+F 2 "" H 5550 3130 30  0000 C CNN
+F 3 "" V 5550 3200 30  0000 C CNN
+	1    5500 3150
+	0    1    1    0   
+$EndComp
+$Comp
+L R R4
+U 1 1 56B85CD1
+P 7150 3000
+F 0 "R4" H 7200 3130 50  0000 C CNN
+F 1 "1k" H 7200 3050 50  0000 C CNN
+F 2 "" H 7200 2980 30  0000 C CNN
+F 3 "" V 7200 3050 30  0000 C CNN
+	1    7150 3000
+	1    0    0    -1  
+$EndComp
+$Comp
+L C C1
+U 1 1 56B85D7C
+P 5550 2850
+F 0 "C1" H 5575 2950 50  0000 L CNN
+F 1 "20n" H 5575 2750 50  0000 L CNN
+F 2 "" H 5588 2700 30  0000 C CNN
+F 3 "" H 5550 2850 60  0000 C CNN
+	1    5550 2850
+	0    -1   -1   0   
+$EndComp
+$Comp
+L pwl v1
+U 1 1 56B85E24
+P 4500 3300
+F 0 "v1" H 4300 3400 60  0000 C CNN
+F 1 "pwl" H 4250 3250 60  0000 C CNN
+F 2 "R1" H 4200 3300 60  0000 C CNN
+F 3 "" H 4500 3300 60  0000 C CNN
+	1    4500 3300
+	1    0    0    -1  
+$EndComp
+$Comp
+L GND #PWR01
+U 1 1 56B85ECF
+P 4500 3750
+F 0 "#PWR01" H 4500 3500 50  0001 C CNN
+F 1 "GND" H 4500 3600 50  0000 C CNN
+F 2 "" H 4500 3750 50  0000 C CNN
+F 3 "" H 4500 3750 50  0000 C CNN
+	1    4500 3750
+	1    0    0    -1  
+$EndComp
+$Comp
+L GND #PWR02
+U 1 1 56B85EF6
+P 5550 3350
+F 0 "#PWR02" H 5550 3100 50  0001 C CNN
+F 1 "GND" H 5550 3200 50  0000 C CNN
+F 2 "" H 5550 3350 50  0000 C CNN
+F 3 "" H 5550 3350 50  0000 C CNN
+	1    5550 3350
+	1    0    0    -1  
+$EndComp
+$Comp
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+U 1 1 56B85F16
+P 7350 2950
+F 0 "#PWR03" H 7350 2700 50  0001 C CNN
+F 1 "GND" H 7350 2800 50  0000 C CNN
+F 2 "" H 7350 2950 50  0000 C CNN
+F 3 "" H 7350 2950 50  0000 C CNN
+	1    7350 2950
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	4500 2850 4800 2850
+Wire Wire Line
+	5100 2850 5400 2850
+Wire Wire Line
+	5700 2850 5850 2850
+Wire Wire Line
+	5850 3050 5550 3050
+Wire Wire Line
+	6600 2950 7050 2950
+Wire Wire Line
+	6350 2300 6800 2300
+Wire Wire Line
+	6800 2300 6800 2950
+Connection ~ 6800 2950
+Wire Wire Line
+	6050 2300 5750 2300
+Wire Wire Line
+	5750 2300 5750 2850
+Connection ~ 5750 2850
+Text GLabel 4550 2700 0    60   Input ~ 0
+in
+Text GLabel 6950 2800 2    60   Input ~ 0
+out
+Wire Wire Line
+	4550 2700 4600 2700
+Wire Wire Line
+	4600 2600 4600 2850
+Connection ~ 4600 2850
+Wire Wire Line
+	6950 2800 6900 2800
+Wire Wire Line
+	6900 2750 6900 2950
+Connection ~ 6900 2950
+$Comp
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+U 1 1 56D46BCE
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+F 1 "plot_v1" H 4800 3150 60  0000 C CNN
+F 2 "" H 4600 2800 60  0000 C CNN
+F 3 "" H 4600 2800 60  0000 C CNN
+	1    4600 2800
+	1    0    0    -1  
+$EndComp
+$Comp
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+U 1 1 56D46C5F
+P 6900 2950
+F 0 "U2" H 6900 3450 60  0000 C CNN
+F 1 "plot_v1" H 7100 3300 60  0000 C CNN
+F 2 "" H 6900 2950 60  0000 C CNN
+F 3 "" H 6900 2950 60  0000 C CNN
+	1    6900 2950
+	1    0    0    -1  
+$EndComp
+Connection ~ 4600 2700
+Connection ~ 6900 2800
+$EndSCHEMATC
diff --git a/Differentiator/Differentiator_Previous_Values.xml b/Differentiator/Differentiator_Previous_Values.xml
new file mode 100644
index 0000000..ffabf04
--- /dev/null
+++ b/Differentiator/Differentiator_Previous_Values.xml
@@ -0,0 +1 @@
+<KicadtoNgspice><source><v1 name="Source type">pwl<field1 name="Enter in pwl format">0m 0 0.5m 5 25m 5 25.5m -5 50m -5 50.5m 5 75m 5 75.5m -5 100m -5</field1></v1></source><model /><devicemodel /><subcircuit><x1><field>/home/fossee/esim-clones/eSim/src/SubcircuitLibrary/ua741</field></x1></subcircuit><analysis><ac><field1 name="Lin">true</field1><field2 name="Dec">false</field2><field3 name="Oct">false</field3><field4 name="Start Frequency" /><field5 name="Stop Frequency" /><field6 name="No. of points" /><field7 name="Start Fre Combo">Hz</field7><field8 name="Stop Fre Combo">Hz</field8></ac><dc><field1 name="Source 1" /><field2 name="Start" /><field3 name="Increment" /><field4 name="Stop" /><field5 name="Operating Point">0</field5><field6 name="Start Combo">Volts or Amperes</field6><field7 name="Increment Combo">Volts or Amperes</field7><field8 name="Stop Combo">Volts or Amperes</field8><field9 name="Source 2" /><field10 name="Start" /><field11 name="Increment" /><field12 name="Stop" /><field13 name="Start Combo">Volts or Amperes</field13><field14 name="Increment Combo">Volts or Amperes</field14><field15 name="Stop Combo">Volts or Amperes</field15></dc><tran><field1 name="Start Time">0</field1><field2 name="Step Time">10</field2><field3 name="Stop Time">100</field3><field4 name="Start Combo">ms</field4><field5 name="Step Combo">ms</field5><field6 name="Stop Combo">ms</field6></tran></analysis></KicadtoNgspice>
\ No newline at end of file
diff --git a/Differentiator/analysis b/Differentiator/analysis
new file mode 100644
index 0000000..660a46c
--- /dev/null
+++ b/Differentiator/analysis
@@ -0,0 +1 @@
+.tran 10e-03 100e-03 0e-03
\ No newline at end of file
diff --git a/Differentiator/plot_data_i.txt b/Differentiator/plot_data_i.txt
new file mode 100644
index 0000000..cfc4d7c
--- /dev/null
+++ b/Differentiator/plot_data_i.txt
@@ -0,0 +1,118 @@
+        * /home/fossee/esim-workspace/differentiator/differentiator.cir
+        Transient Analysis  Thu Mar  3 20:53:54  2016
+--------------------------------------------------------------------------------
+Index   time            e.x1.ein1#branc e.x1.eout1#bran v1#branch       
+--------------------------------------------------------------------------------
+0	0.000000e+00	0.000000e+00	0.000000e+00	0.000000e+00	
+1	5.000000e-06	3.574573e-05	5.685769e-06	-5.00537e-07	
+2	5.421749e-06	3.327502e-05	6.134652e-06	-5.42474e-07	
+3	6.265246e-06	3.727632e-05	7.082125e-06	-6.26778e-07	
+4	7.952241e-06	2.974336e-05	8.889210e-06	-7.94501e-07	
+5	1.132623e-05	4.003635e-05	1.264021e-05	-1.13079e-06	
+6	1.807421e-05	2.772331e-05	1.993997e-05	-1.80003e-06	
+7	3.157017e-05	4.074780e-05	3.467526e-05	-3.13363e-06	
+8	5.856209e-05	2.647270e-05	6.362598e-05	-5.77202e-06	
+9	1.125459e-04	3.969421e-05	1.206008e-04	-1.09455e-05	
+10	2.205136e-04	2.371902e-05	2.298273e-04	-2.08823e-05	
+11	4.364489e-04	3.489366e-05	4.317239e-04	-3.92313e-05	
+12	5.000000e-04	1.957819e-05	4.869540e-04	-4.42592e-05	
+13	5.151657e-04	-7.91553e-06	4.831367e-04	-4.39247e-05	
+14	5.454972e-04	-7.10475e-06	4.758686e-04	-4.32636e-05	
+15	6.061602e-04	-7.59189e-06	4.616467e-04	-4.19709e-05	
+16	7.274862e-04	-6.44931e-06	4.344703e-04	-3.94999e-05	
+17	9.701382e-04	-6.39047e-06	3.847691e-04	-3.49816e-05	
+18	1.455442e-03	-4.36395e-06	3.015103e-04	-2.74117e-05	
+19	2.426050e-03	-3.24115e-06	1.837562e-04	-1.67064e-05	
+20	3.873668e-03	-9.87677e-07	8.609914e-05	-7.82757e-06	
+21	5.209945e-03	-1.03531e-06	4.297556e-05	-3.90730e-06	
+22	6.662390e-03	4.729003e-08	2.008262e-05	-1.82565e-06	
+23	7.985619e-03	-5.20432e-07	1.009551e-05	-9.18003e-07	
+24	9.378633e-03	2.858910e-07	4.883205e-06	-4.43793e-07	
+25	1.131240e-02	-3.89165e-07	1.697695e-06	-1.54512e-07	
+26	1.331240e-02	3.537863e-07	5.686023e-07	-5.15288e-08	
+27	1.531240e-02	-3.65763e-07	1.868369e-07	-1.71523e-08	
+28	1.731240e-02	3.619537e-07	6.497974e-08	-5.74168e-09	
+29	1.931240e-02	-3.63407e-07	1.895894e-08	-1.88970e-09	
+30	2.131240e-02	3.631057e-07	9.021924e-09	-6.54128e-10	
+31	2.331240e-02	-3.63389e-07	3.041014e-10	-1.93814e-10	
+32	2.500000e-02	3.635012e-07	2.976537e-09	-1.04372e-10	
+33	2.502433e-02	-6.86642e-05	-5.32579e-05	4.810184e-06	
+34	2.507298e-02	-6.59308e-05	-1.57723e-04	1.430819e-05	
+35	2.517029e-02	-6.38821e-05	-3.59229e-04	3.262767e-05	
+36	2.536490e-02	-5.68905e-05	-7.34176e-04	6.671662e-05	
+37	2.550000e-02	-5.42575e-05	-9.73719e-04	8.849421e-05	
+38	2.552695e-02	1.554253e-05	-9.60385e-04	8.731400e-05	
+39	2.558086e-02	1.415155e-05	-9.34849e-04	8.499192e-05	
+40	2.568868e-02	1.438370e-05	-8.85771e-04	8.053044e-05	
+41	2.590431e-02	1.195717e-05	-7.95163e-04	7.229226e-05	
+42	2.633557e-02	1.054079e-05	-6.40384e-04	5.822101e-05	
+43	2.719809e-02	5.970034e-06	-4.13206e-04	3.756652e-05	
+44	2.858761e-02	3.642217e-06	-2.00138e-04	1.819585e-05	
+45	3.009618e-02	9.126156e-07	-9.05238e-05	8.229771e-06	
+46	3.136523e-02	1.241538e-06	-4.69143e-05	4.265461e-06	
+47	3.269829e-02	-1.38879e-07	-2.34652e-05	2.133111e-06	
+48	3.406380e-02	6.873866e-07	-1.15174e-05	1.047339e-06	
+49	3.558326e-02	-4.25964e-07	-5.18023e-06	4.707302e-07	
+50	3.758326e-02	5.343393e-07	-1.72299e-06	1.568778e-07	
+51	3.958326e-02	-4.98470e-07	-5.78110e-07	5.232697e-08	
+52	4.158326e-02	5.106829e-07	-1.88928e-07	1.740864e-08	
+53	4.358326e-02	-5.06868e-07	-6.67551e-08	5.836808e-09	
+54	4.558326e-02	5.083964e-07	-1.84721e-08	1.911741e-09	
+
+Index   time            e.x1.ein1#branc e.x1.eout1#bran v1#branch       
+--------------------------------------------------------------------------------
+55	4.758326e-02	-5.08144e-07	-9.93869e-09	6.711479e-10	
+56	4.958326e-02	5.084846e-07	4.697668e-10	1.898107e-10	
+57	5.000000e-02	-5.09343e-07	-4.76320e-09	2.001050e-10	
+58	5.000653e-02	7.079768e-05	1.472199e-05	-1.30598e-06	
+59	5.001960e-02	6.607983e-05	4.326001e-05	-3.90247e-06	
+60	5.004574e-02	6.965197e-05	9.985233e-05	-9.04554e-06	
+61	5.009802e-02	6.335703e-05	2.107726e-04	-1.91320e-05	
+62	5.020257e-02	6.461849e-05	4.242119e-04	-3.85348e-05	
+63	5.041167e-02	5.379691e-05	8.192074e-04	-7.44481e-05	
+64	5.050000e-02	5.603136e-05	9.739707e-04	-8.85163e-05	
+65	5.051895e-02	-1.58336e-05	9.644296e-04	-8.76818e-05	
+66	5.055686e-02	-1.40962e-05	9.463307e-04	-8.60357e-05	
+67	5.063267e-02	-1.50201e-05	9.111189e-04	-8.28350e-05	
+68	5.078429e-02	-1.24905e-05	8.445769e-04	-7.67847e-05	
+69	5.108754e-02	-1.21173e-05	7.255372e-04	-6.59628e-05	
+70	5.169403e-02	-7.62831e-06	5.344974e-04	-4.85937e-05	
+71	5.290701e-02	-5.22667e-06	2.857539e-04	-2.59798e-05	
+72	5.429363e-02	-1.42383e-06	1.386432e-04	-1.26045e-05	
+73	5.556627e-02	-1.87315e-06	7.170979e-05	-6.51986e-06	
+74	5.697105e-02	2.100413e-07	3.443940e-05	-3.13073e-06	
+75	5.837322e-02	-1.00961e-06	1.655531e-05	-1.50547e-06	
+76	5.988615e-02	6.333964e-07	7.474782e-06	-6.79229e-07	
+77	6.188615e-02	-7.89781e-07	2.486034e-06	-2.26362e-07	
+78	6.388615e-02	7.380314e-07	8.342738e-07	-7.55048e-08	
+79	6.588615e-02	-7.55661e-07	2.725044e-07	-2.51184e-08	
+80	6.788615e-02	7.501638e-07	9.642747e-08	-8.42302e-09	
+81	6.988615e-02	-7.52376e-07	2.654895e-08	-2.75756e-09	
+82	7.188615e-02	7.520182e-07	1.444572e-08	-9.69357e-10	
+83	7.388615e-02	-7.52517e-07	-7.82815e-10	-2.72942e-10	
+84	7.500000e-02	7.529455e-07	6.129836e-09	-2.12951e-10	
+85	7.501629e-02	-6.92115e-05	-3.59417e-05	3.235744e-06	
+86	7.504888e-02	-6.64475e-05	-1.06466e-04	9.648276e-06	
+87	7.511406e-02	-6.59776e-05	-2.44151e-04	2.216516e-05	
+88	7.524441e-02	-6.01643e-05	-5.06457e-04	4.601359e-05	
+89	7.550000e-02	-5.45449e-05	-9.74157e-04	8.853392e-05	
+90	7.552607e-02	1.557478e-05	-9.61235e-04	8.739124e-05	
+91	7.557821e-02	1.415801e-05	-9.36503e-04	8.514229e-05	
+92	7.568249e-02	1.445258e-05	-8.88908e-04	8.081566e-05	
+93	7.589106e-02	1.202585e-05	-8.00811e-04	7.280579e-05	
+94	7.630819e-02	1.070448e-05	-6.49559e-04	5.905511e-05	
+95	7.714244e-02	6.140778e-06	-4.25374e-04	3.867278e-05	
+96	7.853196e-02	3.754554e-06	-2.06033e-04	1.873178e-05	
+97	8.000975e-02	9.607710e-07	-9.48712e-05	8.625010e-06	
+98	8.127240e-02	1.299582e-06	-4.93426e-05	4.486244e-06	
+99	8.261185e-02	-1.41232e-07	-2.45911e-05	2.235471e-06	
+100	8.398566e-02	7.151679e-07	-1.20134e-05	1.092445e-06	
+101	8.550177e-02	-4.42320e-07	-5.41391e-06	4.919666e-07	
+102	8.750177e-02	5.555836e-07	-1.80073e-06	1.639553e-07	
+103	8.950177e-02	-5.18095e-07	-6.04175e-07	5.468751e-08	
+104	9.150177e-02	5.308578e-07	-1.97468e-07	1.819416e-08	
+105	9.350177e-02	-5.26870e-07	-6.97507e-08	6.099987e-09	
+106	9.550177e-02	5.284660e-07	-1.93214e-08	1.998130e-09	
+107	9.750177e-02	-5.28201e-07	-1.03711e-08	7.012827e-10	
+108	9.950177e-02	5.285560e-07	4.749534e-10	1.985173e-10	
+109	1.000000e-01	-5.29291e-07	-4.87997e-09	2.015989e-10	
diff --git a/Differentiator/plot_data_v.txt b/Differentiator/plot_data_v.txt
new file mode 100644
index 0000000..76765ba
--- /dev/null
+++ b/Differentiator/plot_data_v.txt
@@ -0,0 +1,356 @@
+        * /home/fossee/esim-workspace/differentiator/differentiator.cir
+        Transient Analysis  Thu Mar  3 20:53:54  2016
+--------------------------------------------------------------------------------
+Index   time            in              net-_c1-pad1_   net-_c1-pad2_   
+--------------------------------------------------------------------------------
+0	0.000000e+00	0.000000e+00	0.000000e+00	0.000000e+00	
+1	5.000000e-06	5.000000e-02	-5.37398e-05	-1.78874e-04	
+2	5.421749e-06	5.421749e-02	-2.99451e-05	-1.66519e-04	
+3	6.265246e-06	6.265246e-02	-2.53144e-05	-1.86545e-04	
+4	7.952241e-06	7.952241e-02	7.229371e-05	-1.48879e-04	
+5	1.132623e-05	1.132623e-01	1.831640e-04	-2.00406e-04	
+6	1.807421e-05	1.807421e-01	7.391162e-04	-1.38882e-04	
+7	3.157017e-05	3.157017e-01	2.338429e-03	-2.04182e-04	
+8	5.856209e-05	5.856209e-01	8.419069e-03	-1.33056e-04	
+9	1.125459e-04	1.125459e+00	3.091419e-02	-1.99758e-04	
+10	2.205136e-04	2.205136e+00	1.169023e-01	-1.20917e-04	
+11	4.364489e-04	4.364489e+00	4.413608e-01	-1.78806e-04	
+12	5.000000e-04	5.000000e+00	5.740846e-01	-1.02734e-04	
+13	5.151657e-04	5.000000e+00	6.075297e-01	3.484059e-05	
+14	5.454972e-04	5.000000e+00	6.736395e-01	3.085623e-05	
+15	6.061602e-04	5.000000e+00	8.029066e-01	3.343315e-05	
+16	7.274862e-04	5.000000e+00	1.050014e+00	2.798498e-05	
+17	9.701382e-04	5.000000e+00	1.501841e+00	2.817997e-05	
+18	1.455442e-03	5.000000e+00	2.258825e+00	1.886205e-05	
+19	2.426050e-03	5.000000e+00	3.329357e+00	1.440465e-05	
+20	3.873668e-03	5.000000e+00	4.217243e+00	4.093141e-06	
+21	5.209945e-03	5.000000e+00	4.609270e+00	4.756028e-06	
+22	6.662390e-03	5.000000e+00	4.817435e+00	-4.34299e-07	
+23	7.985619e-03	5.000000e+00	4.908200e+00	2.504064e-06	
+24	9.378633e-03	5.000000e+00	4.955621e+00	-1.47825e-06	
+25	1.131240e-02	5.000000e+00	4.984549e+00	1.930085e-06	
+26	1.331240e-02	5.000000e+00	4.994847e+00	-1.77542e-06	
+27	1.531240e-02	5.000000e+00	4.998285e+00	1.827889e-06	
+28	1.731240e-02	5.000000e+00	4.999426e+00	-1.81131e-06	
+29	1.931240e-02	5.000000e+00	4.999811e+00	1.817757e-06	
+30	2.131240e-02	5.000000e+00	4.999935e+00	-1.81653e-06	
+31	2.331240e-02	5.000000e+00	4.999981e+00	1.817855e-06	
+32	2.500000e-02	5.000000e+00	4.999990e+00	-1.81845e-06	
+33	2.502433e-02	4.513466e+00	4.994485e+00	3.440176e-04	
+34	2.507298e-02	3.540399e+00	4.971218e+00	3.313720e-04	
+35	2.517029e-02	1.594263e+00	4.857030e+00	3.231074e-04	
+36	2.536490e-02	-2.29801e+00	4.373655e+00	2.918234e-04	
+37	2.550000e-02	-5.00000e+00	3.849421e+00	2.810103e-04	
+38	2.552695e-02	-5.00000e+00	3.731400e+00	-6.82958e-05	
+39	2.558086e-02	-5.00000e+00	3.499192e+00	-6.15888e-05	
+40	2.568868e-02	-5.00000e+00	3.053044e+00	-6.32333e-05	
+41	2.590431e-02	-5.00000e+00	2.229226e+00	-5.19868e-05	
+42	2.633557e-02	-5.00000e+00	8.221006e-01	-4.64252e-05	
+43	2.719809e-02	-5.00000e+00	-1.24335e+00	-2.57968e-05	
+44	2.858761e-02	-5.00000e+00	-3.18041e+00	-1.62497e-05	
+45	3.009618e-02	-5.00000e+00	-4.17702e+00	-3.67408e-06	
+46	3.136523e-02	-5.00000e+00	-4.57345e+00	-5.74889e-06	
+47	3.269829e-02	-5.00000e+00	-4.78669e+00	9.257774e-07	
+48	3.406380e-02	-5.00000e+00	-4.89527e+00	-3.32526e-06	
+49	3.558326e-02	-5.00000e+00	-4.95293e+00	2.181890e-06	
+50	3.758326e-02	-5.00000e+00	-4.98431e+00	-2.65607e-06	
+51	3.958326e-02	-5.00000e+00	-4.99477e+00	2.499291e-06	
+52	4.158326e-02	-5.00000e+00	-4.99826e+00	-2.55283e-06	
+53	4.358326e-02	-5.00000e+00	-4.99942e+00	2.536268e-06	
+54	4.558326e-02	-5.00000e+00	-4.99981e+00	-2.54307e-06	
+
+Index   time            in              net-_c1-pad1_   net-_c1-pad2_   
+--------------------------------------------------------------------------------
+55	4.758326e-02	-5.00000e+00	-4.99993e+00	2.542089e-06	
+56	4.958326e-02	-5.00000e+00	-4.99998e+00	-2.54370e-06	
+57	5.000000e-02	-5.00000e+00	-4.99998e+00	2.548035e-06	
+58	5.000653e-02	-4.86931e+00	-4.99991e+00	-3.54311e-04	
+59	5.001960e-02	-4.60794e+00	-4.99819e+00	-3.30991e-04	
+60	5.004574e-02	-4.08519e+00	-4.98974e+00	-3.49417e-04	
+61	5.009802e-02	-3.03969e+00	-4.95289e+00	-3.19019e-04	
+62	5.020257e-02	-9.48692e-01	-4.80217e+00	-3.27431e-04	
+63	5.041167e-02	3.233304e+00	-4.21150e+00	-2.77185e-04	
+64	5.050000e-02	5.000000e+00	-3.85163e+00	-2.89887e-04	
+65	5.051895e-02	5.000000e+00	-3.76818e+00	6.971208e-05	
+66	5.055686e-02	5.000000e+00	-3.60357e+00	6.119894e-05	
+67	5.063267e-02	5.000000e+00	-3.28350e+00	6.616716e-05	
+68	5.078429e-02	5.000000e+00	-2.67847e+00	5.416820e-05	
+69	5.108754e-02	5.000000e+00	-1.59628e+00	5.347333e-05	
+70	5.169403e-02	5.000000e+00	1.406318e-01	3.289808e-05	
+71	5.290701e-02	5.000000e+00	2.402024e+00	2.333295e-05	
+72	5.429363e-02	5.000000e+00	3.739554e+00	5.757668e-06	
+73	5.556627e-02	5.000000e+00	4.348014e+00	8.664382e-06	
+74	5.697105e-02	5.000000e+00	4.686927e+00	-1.38982e-06	
+75	5.837322e-02	5.000000e+00	4.849453e+00	4.887561e-06	
+76	5.988615e-02	5.000000e+00	4.932077e+00	-3.24216e-06	
+77	6.188615e-02	5.000000e+00	4.977364e+00	3.926406e-06	
+78	6.388615e-02	5.000000e+00	4.992450e+00	-3.70022e-06	
+79	6.588615e-02	5.000000e+00	4.997488e+00	3.777514e-06	
+80	6.788615e-02	5.000000e+00	4.999158e+00	-3.75365e-06	
+81	6.988615e-02	5.000000e+00	4.999724e+00	3.763502e-06	
+82	7.188615e-02	5.000000e+00	4.999903e+00	-3.76212e-06	
+83	7.388615e-02	5.000000e+00	4.999973e+00	3.764479e-06	
+84	7.500000e-02	5.000000e+00	4.999979e+00	-3.76667e-06	
+85	7.501629e-02	4.674118e+00	4.997693e+00	3.465846e-04	
+86	7.504888e-02	4.022355e+00	4.987183e+00	3.334520e-04	
+87	7.511406e-02	2.718829e+00	4.935345e+00	3.324573e-04	
+88	7.524441e-02	1.117775e-01	4.713137e+00	3.059585e-04	
+89	7.550000e-02	-5.00000e+00	3.853392e+00	2.824524e-04	
+90	7.552607e-02	-5.00000e+00	3.739124e+00	-6.84487e-05	
+91	7.557821e-02	-5.00000e+00	3.514229e+00	-6.16049e-05	
+92	7.568249e-02	-5.00000e+00	3.081566e+00	-6.35470e-05	
+93	7.589106e-02	-5.00000e+00	2.280579e+00	-5.22747e-05	
+94	7.630819e-02	-5.00000e+00	9.055114e-01	-4.71538e-05	
+95	7.714244e-02	-5.00000e+00	-1.13272e+00	-2.65311e-05	
+96	7.853196e-02	-5.00000e+00	-3.12682e+00	-1.67536e-05	
+97	8.000975e-02	-5.00000e+00	-4.13750e+00	-3.87217e-06	
+98	8.127240e-02	-5.00000e+00	-4.55138e+00	-6.01535e-06	
+99	8.261185e-02	-5.00000e+00	-4.77645e+00	9.486327e-07	
+100	8.398566e-02	-5.00000e+00	-4.89076e+00	-3.45935e-06	
+101	8.550177e-02	-5.00000e+00	-4.95080e+00	2.266013e-06	
+102	8.750177e-02	-5.00000e+00	-4.98360e+00	-2.76158e-06	
+103	8.950177e-02	-5.00000e+00	-4.99453e+00	2.597722e-06	
+104	9.150177e-02	-5.00000e+00	-4.99818e+00	-2.65367e-06	
+105	9.350177e-02	-5.00000e+00	-4.99939e+00	2.636357e-06	
+106	9.550177e-02	-5.00000e+00	-4.99980e+00	-2.64346e-06	
+107	9.750177e-02	-5.00000e+00	-4.99993e+00	2.642429e-06	
+108	9.950177e-02	-5.00000e+00	-4.99998e+00	-2.64411e-06	
+109	1.000000e-01	-5.00000e+00	-4.99998e+00	2.647830e-06	
+
+        * /home/fossee/esim-workspace/differentiator/differentiator.cir
+        Transient Analysis  Thu Mar  3 20:53:54  2016
+--------------------------------------------------------------------------------
+Index   time            net-_r2-pad1_   out             x1.1            
+--------------------------------------------------------------------------------
+0	0.000000e+00	0.000000e+00	0.000000e+00	0.000000e+00	
+1	5.000000e-06	-8.93924e-08	-5.18514e-03	-5.61157e-03	
+2	5.421749e-06	-8.32178e-08	-5.59209e-03	-6.05219e-03	
+3	6.265246e-06	-9.32257e-08	-6.45525e-03	-6.98641e-03	
+4	7.952241e-06	-7.44022e-08	-8.09463e-03	-8.76133e-03	
+5	1.132623e-05	-1.00153e-07	-1.15093e-02	-1.24573e-02	
+6	1.807421e-05	-6.94064e-08	-1.81399e-02	-1.96354e-02	
+7	3.157017e-05	-1.02040e-07	-3.15415e-02	-3.41422e-02	
+8	5.856209e-05	-6.64949e-08	-5.78539e-02	-6.26258e-02	
+9	1.125459e-04	-9.98290e-08	-1.09655e-01	-1.18700e-01	
+10	2.205136e-04	-6.04284e-08	-2.08945e-01	-2.26182e-01	
+11	4.364489e-04	-8.93585e-08	-3.92493e-01	-4.24872e-01	
+12	5.000000e-04	-5.13416e-08	-4.42695e-01	-4.79216e-01	
+13	5.151657e-04	1.741159e-08	-4.39212e-01	-4.75447e-01	
+14	5.454972e-04	1.542040e-08	-4.32605e-01	-4.68295e-01	
+15	6.061602e-04	1.670822e-08	-4.19676e-01	-4.54299e-01	
+16	7.274862e-04	1.398550e-08	-3.94970e-01	-4.27556e-01	
+17	9.701382e-04	1.408294e-08	-3.49788e-01	-3.78645e-01	
+18	1.455442e-03	9.426312e-09	-2.74099e-01	-2.96712e-01	
+19	2.426050e-03	7.198726e-09	-1.67050e-01	-1.80832e-01	
+20	3.873668e-03	2.045548e-09	-7.82716e-02	-8.47290e-02	
+21	5.209945e-03	2.376826e-09	-3.90683e-02	-4.22914e-02	
+22	6.662390e-03	-2.17041e-10	-1.82570e-02	-1.97632e-02	
+23	7.985619e-03	1.251406e-09	-9.17751e-03	-9.93467e-03	
+24	9.378633e-03	-7.38756e-10	-4.43941e-03	-4.80565e-03	
+25	1.131240e-02	9.645602e-10	-1.54318e-03	-1.67051e-03	
+26	1.331240e-02	-8.87264e-10	-5.17073e-04	-5.59718e-04	
+27	1.531240e-02	9.134879e-10	-1.69686e-04	-1.83698e-04	
+28	1.731240e-02	-9.05205e-10	-5.92372e-05	-6.41106e-05	
+29	1.931240e-02	9.084242e-10	-1.70702e-05	-1.84921e-05	
+30	2.131240e-02	-9.07810e-10	-8.36689e-06	-9.04353e-06	
+31	2.331240e-02	9.084730e-10	-1.11196e-07	-1.34004e-07	
+32	2.500000e-02	-9.08769e-10	-2.87126e-06	-3.09450e-06	
+33	2.502433e-02	1.719228e-07	4.844758e-02	5.244192e-02	
+34	2.507298e-02	1.656032e-07	1.434149e-01	1.552442e-01	
+35	2.517029e-02	1.614729e-07	3.266014e-01	3.535436e-01	
+36	2.536490e-02	1.458388e-07	6.674595e-01	7.225227e-01	
+37	2.550000e-02	1.404349e-07	8.852245e-01	9.582534e-01	
+38	2.552695e-02	-3.41308e-08	8.730713e-01	9.451002e-01	
+39	2.558086e-02	-3.07790e-08	8.498573e-01	9.199709e-01	
+40	2.568868e-02	-3.16009e-08	8.052409e-01	8.716737e-01	
+41	2.590431e-02	-2.59804e-08	7.228703e-01	7.825075e-01	
+42	2.633557e-02	-2.32010e-08	5.821634e-01	6.301922e-01	
+43	2.719809e-02	-1.28919e-08	3.756393e-01	4.066297e-01	
+44	2.858761e-02	-8.12078e-09	1.819422e-01	1.969525e-01	
+45	3.009618e-02	-1.83612e-09	8.229402e-02	8.908330e-02	
+46	3.136523e-02	-2.87301e-09	4.264883e-02	4.616741e-02	
+47	3.269829e-02	4.626574e-10	2.133204e-02	2.309193e-02	
+48	3.406380e-02	-1.66180e-09	1.047005e-02	1.133385e-02	
+49	3.558326e-02	1.090400e-09	4.709495e-03	5.098012e-03	
+50	3.758326e-02	-1.32737e-09	1.566109e-03	1.695333e-03	
+51	3.958326e-02	1.249021e-09	5.257815e-04	5.691397e-04	
+52	4.158326e-02	-1.27578e-09	1.715208e-04	1.856905e-04	
+53	4.358326e-02	1.267500e-09	6.091703e-05	6.592366e-05	
+54	4.558326e-02	-1.27090e-09	1.656162e-05	1.794703e-05	
+
+Index   time            net-_r2-pad1_   out             x1.1            
+--------------------------------------------------------------------------------
+55	4.758326e-02	1.270409e-09	9.266272e-06	1.001167e-05	
+56	4.958326e-02	-1.27121e-09	-6.58306e-07	-6.93539e-07	
+57	5.000000e-02	1.273381e-09	4.561819e-06	4.919059e-06	
+58	5.000653e-02	-1.77067e-07	-1.34158e-02	-1.45200e-02	
+59	5.001960e-02	-1.65413e-07	-3.93574e-02	-4.26019e-02	
+60	5.004574e-02	-1.74621e-07	-9.08066e-02	-9.82955e-02	
+61	5.009802e-02	-1.59430e-07	-1.91640e-01	-2.07448e-01	
+62	5.020257e-02	-1.63634e-07	-3.85677e-01	-4.17493e-01	
+63	5.041167e-02	-1.38523e-07	-7.44759e-01	-8.06200e-01	
+64	5.050000e-02	-1.44871e-07	-8.85454e-01	-9.58502e-01	
+65	5.051895e-02	3.483862e-08	-8.76748e-01	-9.49080e-01	
+66	5.055686e-02	3.058418e-08	-8.60295e-01	-9.31270e-01	
+67	5.063267e-02	3.306704e-08	-8.28284e-01	-8.96618e-01	
+68	5.078429e-02	2.707056e-08	-7.67792e-01	-8.31136e-01	
+69	5.108754e-02	2.672331e-08	-6.59574e-01	-7.13990e-01	
+70	5.169403e-02	1.644082e-08	-4.85904e-01	-5.25991e-01	
+71	5.290701e-02	1.166064e-08	-2.59774e-01	-2.81206e-01	
+72	5.429363e-02	2.877395e-09	-1.26039e-01	-1.36437e-01	
+73	5.556627e-02	4.330026e-09	-6.51899e-02	-7.05682e-02	
+74	5.697105e-02	-6.94561e-10	-3.13087e-02	-3.38916e-02	
+75	5.837322e-02	2.442559e-09	-1.50498e-02	-1.62915e-02	
+76	5.988615e-02	-1.62027e-09	-6.79555e-03	-7.35616e-03	
+77	6.188615e-02	1.962222e-09	-2.25967e-03	-2.44613e-03	
+78	6.388615e-02	-1.84919e-09	-7.58767e-04	-8.21338e-04	
+79	6.588615e-02	1.887813e-09	-2.47388e-04	-2.67826e-04	
+80	6.788615e-02	-1.87589e-09	-8.80026e-05	-9.52346e-05	
+81	6.988615e-02	1.880810e-09	-2.37933e-05	-2.57844e-05	
+82	7.188615e-02	-1.88012e-09	-1.34745e-05	-1.45579e-05	
+83	7.388615e-02	1.881299e-09	1.053876e-06	1.112587e-06	
+84	7.500000e-02	-1.88240e-09	-5.91500e-06	-6.37474e-06	
+85	7.501629e-02	1.732057e-07	3.270576e-02	3.540138e-02	
+86	7.504888e-02	1.666427e-07	9.681788e-02	1.048029e-01	
+87	7.511406e-02	1.661456e-07	2.219857e-01	2.402970e-01	
+88	7.524441e-02	1.529028e-07	4.604434e-01	4.984277e-01	
+89	7.550000e-02	1.411556e-07	8.856231e-01	9.586848e-01	
+90	7.552607e-02	-3.42073e-08	8.738436e-01	9.459363e-01	
+91	7.557821e-02	-3.07870e-08	8.513610e-01	9.215988e-01	
+92	7.568249e-02	-3.17576e-08	8.080928e-01	8.747609e-01	
+93	7.589106e-02	-2.61243e-08	7.280054e-01	7.880662e-01	
+94	7.630819e-02	-2.35651e-08	5.905038e-01	6.392207e-01	
+95	7.714244e-02	-1.32589e-08	3.867012e-01	4.186042e-01	
+96	7.853196e-02	-8.37262e-09	1.873009e-01	2.027534e-01	
+97	8.000975e-02	-1.93512e-09	8.624621e-02	9.336155e-02	
+98	8.127240e-02	-3.00617e-09	4.485640e-02	4.855710e-02	
+99	8.261185e-02	4.740793e-10	2.235567e-02	2.420000e-02	
+100	8.398566e-02	-1.72881e-09	1.092097e-02	1.182197e-02	
+101	8.550177e-02	1.132440e-09	4.921943e-03	5.327986e-03	
+102	8.750177e-02	-1.38010e-09	1.636778e-03	1.771833e-03	
+103	8.950177e-02	1.298212e-09	5.494858e-04	5.947989e-04	
+104	9.150177e-02	-1.32617e-09	1.792747e-04	1.940847e-04	
+105	9.350177e-02	1.317520e-09	6.364940e-05	6.888071e-05	
+106	9.550177e-02	-1.32107e-09	1.732463e-05	1.877374e-05	
+107	9.750177e-02	1.320554e-09	9.668461e-06	1.044629e-05	
+108	9.950177e-02	-1.32139e-09	-6.72149e-07	-7.07771e-07	
+109	1.000000e-01	1.323253e-09	4.677052e-06	5.043050e-06	
+
+        * /home/fossee/esim-workspace/differentiator/differentiator.cir
+        Transient Analysis  Thu Mar  3 20:53:54  2016
+--------------------------------------------------------------------------------
+Index   time            x1.2            x1.4            
+--------------------------------------------------------------------------------
+0	0.000000e+00	0.000000e+00	0.000000e+00	
+1	5.000000e-06	-5.61157e-03	-1.78785e+01	
+2	5.421749e-06	-6.05219e-03	-1.66436e+01	
+3	6.265246e-06	-6.98641e-03	-1.86451e+01	
+4	7.952241e-06	-8.76133e-03	-1.48804e+01	
+5	1.132623e-05	-1.24573e-02	-2.00306e+01	
+6	1.807421e-05	-1.96354e-02	-1.38813e+01	
+7	3.157017e-05	-3.41422e-02	-2.04080e+01	
+8	5.856209e-05	-6.26258e-02	-1.32990e+01	
+9	1.125459e-04	-1.18700e-01	-1.99658e+01	
+10	2.205136e-04	-2.26182e-01	-1.20857e+01	
+11	4.364489e-04	-4.24872e-01	-1.78717e+01	
+12	5.000000e-04	-4.79216e-01	-1.02683e+01	
+13	5.151657e-04	-4.75447e-01	3.482318e+00	
+14	5.454972e-04	-4.68295e-01	3.084081e+00	
+15	6.061602e-04	-4.54299e-01	3.341644e+00	
+16	7.274862e-04	-4.27556e-01	2.797099e+00	
+17	9.701382e-04	-3.78645e-01	2.816589e+00	
+18	1.455442e-03	-2.96712e-01	1.885262e+00	
+19	2.426050e-03	-1.80832e-01	1.439745e+00	
+20	3.873668e-03	-8.47290e-02	4.091096e-01	
+21	5.209945e-03	-4.22914e-02	4.753651e-01	
+22	6.662390e-03	-1.97632e-02	-4.34082e-02	
+23	7.985619e-03	-9.93467e-03	2.502813e-01	
+24	9.378633e-03	-4.80565e-03	-1.47751e-01	
+25	1.131240e-02	-1.67051e-03	1.929120e-01	
+26	1.331240e-02	-5.59718e-04	-1.77453e-01	
+27	1.531240e-02	-1.83698e-04	1.826976e-01	
+28	1.731240e-02	-6.41106e-05	-1.81041e-01	
+29	1.931240e-02	-1.84921e-05	1.816848e-01	
+30	2.131240e-02	-9.04353e-06	-1.81562e-01	
+31	2.331240e-02	-1.34004e-07	1.816946e-01	
+32	2.500000e-02	-3.09450e-06	-1.81754e-01	
+33	2.502433e-02	5.244192e-02	3.438456e+01	
+34	2.507298e-02	1.552442e-01	3.312064e+01	
+35	2.517029e-02	3.535436e-01	3.229459e+01	
+36	2.536490e-02	7.225227e-01	2.916775e+01	
+37	2.550000e-02	9.582534e-01	2.808699e+01	
+38	2.552695e-02	9.451002e-01	-6.82616e+00	
+39	2.558086e-02	9.199709e-01	-6.15580e+00	
+40	2.568868e-02	8.716737e-01	-6.32017e+00	
+41	2.590431e-02	7.825075e-01	-5.19608e+00	
+42	2.633557e-02	6.301922e-01	-4.64020e+00	
+43	2.719809e-02	4.066297e-01	-2.57839e+00	
+44	2.858761e-02	1.969525e-01	-1.62416e+00	
+45	3.009618e-02	8.908330e-02	-3.67224e-01	
+46	3.136523e-02	4.616741e-02	-5.74602e-01	
+47	3.269829e-02	2.309193e-02	9.253148e-02	
+48	3.406380e-02	1.133385e-02	-3.32359e-01	
+49	3.558326e-02	5.098012e-03	2.180800e-01	
+50	3.758326e-02	1.695333e-03	-2.65474e-01	
+51	3.958326e-02	5.691397e-04	2.498042e-01	
+52	4.158326e-02	1.856905e-04	-2.55156e-01	
+53	4.358326e-02	6.592366e-05	2.535001e-01	
+54	4.558326e-02	1.794703e-05	-2.54180e-01	
+
+Index   time            x1.2            x1.4            
+--------------------------------------------------------------------------------
+55	4.758326e-02	1.001167e-05	2.540818e-01	
+56	4.958326e-02	-6.93539e-07	-2.54243e-01	
+57	5.000000e-02	4.919059e-06	2.546762e-01	
+58	5.000653e-02	-1.45200e-02	-3.54134e+01	
+59	5.001960e-02	-4.26019e-02	-3.30825e+01	
+60	5.004574e-02	-9.82955e-02	-3.49243e+01	
+61	5.009802e-02	-2.07448e-01	-3.18860e+01	
+62	5.020257e-02	-4.17493e-01	-3.27267e+01	
+63	5.041167e-02	-8.06200e-01	-2.77047e+01	
+64	5.050000e-02	-9.58502e-01	-2.89742e+01	
+65	5.051895e-02	-9.49080e-01	6.967725e+00	
+66	5.055686e-02	-9.31270e-01	6.116836e+00	
+67	5.063267e-02	-8.96618e-01	6.613409e+00	
+68	5.078429e-02	-8.31136e-01	5.414113e+00	
+69	5.108754e-02	-7.13990e-01	5.344661e+00	
+70	5.169403e-02	-5.25991e-01	3.288164e+00	
+71	5.290701e-02	-2.81206e-01	2.332129e+00	
+72	5.429363e-02	-1.36437e-01	5.754790e-01	
+73	5.556627e-02	-7.05682e-02	8.660052e-01	
+74	5.697105e-02	-3.38916e-02	-1.38912e-01	
+75	5.837322e-02	-1.62915e-02	4.885118e-01	
+76	5.988615e-02	-7.35616e-03	-3.24054e-01	
+77	6.188615e-02	-2.44613e-03	3.924444e-01	
+78	6.388615e-02	-8.21338e-04	-3.69837e-01	
+79	6.588615e-02	-2.67826e-04	3.775626e-01	
+80	6.788615e-02	-9.52346e-05	-3.75177e-01	
+81	6.988615e-02	-2.57844e-05	3.761621e-01	
+82	7.188615e-02	-1.45579e-05	-3.76024e-01	
+83	7.388615e-02	1.112587e-06	3.762598e-01	
+84	7.500000e-02	-6.37474e-06	-3.76479e-01	
+85	7.501629e-02	3.540138e-02	3.464114e+01	
+86	7.504888e-02	1.048029e-01	3.332853e+01	
+87	7.511406e-02	2.402970e-01	3.322911e+01	
+88	7.524441e-02	4.984277e-01	3.058056e+01	
+89	7.550000e-02	9.586848e-01	2.823112e+01	
+90	7.552607e-02	9.459363e-01	-6.84145e+00	
+91	7.557821e-02	9.215988e-01	-6.15741e+00	
+92	7.568249e-02	8.747609e-01	-6.35153e+00	
+93	7.589106e-02	7.880662e-01	-5.22486e+00	
+94	7.630819e-02	6.392207e-01	-4.71302e+00	
+95	7.714244e-02	4.186042e-01	-2.65178e+00	
+96	7.853196e-02	2.027534e-01	-1.67452e+00	
+97	8.000975e-02	9.336155e-02	-3.87024e-01	
+98	8.127240e-02	4.855710e-02	-6.01234e-01	
+99	8.261185e-02	2.420000e-02	9.481586e-02	
+100	8.398566e-02	1.182197e-02	-3.45762e-01	
+101	8.550177e-02	5.327986e-03	2.264880e-01	
+102	8.750177e-02	1.771833e-03	-2.76020e-01	
+103	8.950177e-02	5.947989e-04	2.596423e-01	
+104	9.150177e-02	1.940847e-04	-2.65235e-01	
+105	9.350177e-02	6.888071e-05	2.635039e-01	
+106	9.550177e-02	1.877374e-05	-2.64214e-01	
+107	9.750177e-02	1.044629e-05	2.641108e-01	
+108	9.950177e-02	-7.07771e-07	-2.64279e-01	
+109	1.000000e-01	5.043050e-06	2.646507e-01	
diff --git a/Differentiator/ua741-cache.bak b/Differentiator/ua741-cache.bak
new file mode 100644
index 0000000..eaad34a
--- /dev/null
+++ b/Differentiator/ua741-cache.bak
@@ -0,0 +1,100 @@
+EESchema-LIBRARY Version 2.3  Date: Sunday 21 October 2012 01:22:10 AM IST
+#encoding utf-8
+#
+# C
+#
+DEF C C 0 10 N Y 1 F N
+F0 "C" 50 100 50 H V L CNN
+F1 "C" 50 -100 50 H V L CNN
+$FPLIST
+ SM*
+ C?
+ C1-1
+$ENDFPLIST
+DRAW
+P 2 0 1 10  -100 -30  100 -30 N
+P 2 0 1 10  -100 30  100 30 N
+X ~ 1 0 200 170 D 40 40 1 1 P
+X ~ 2 0 -200 170 U 40 40 1 1 P
+ENDDRAW
+ENDDEF
+#
+# GND
+#
+DEF ~GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 0 30 H I C CNN
+F1 "GND" 0 -70 30 H I C CNN
+DRAW
+P 4 0 1 0  -50 0  0 -50  50 0  -50 0 N
+X GND 1 0 0 0 U 30 30 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# PORT
+#
+DEF PORT U 0 40 Y Y 8 F N
+F0 "U" 0 -50 30 H V C CNN
+F1 "PORT" 0 0 30 H V C CNN
+DRAW
+A 325 225 285 -1421 -1278 0 1 0 N 100 50 150 0
+A 376 -275 356 1294 1408 0 1 0 N 150 0 100 -50
+S -100 50 100 -50 0 1 0 N
+X ~ 1 250 0 100 L 30 30 1 1 I
+X ~ 2 250 0 100 L 30 30 2 1 I
+X ~ 3 250 0 100 L 30 30 3 1 I
+X ~ 4 250 0 100 L 30 30 4 1 I
+X ~ 5 250 0 100 L 30 30 5 1 I
+X ~ 6 250 0 100 L 30 30 6 1 I
+X ~ 7 250 0 100 L 30 30 7 1 I
+X ~ 8 250 0 100 L 30 30 8 1 I
+ENDDRAW
+ENDDEF
+#
+# PWR_FLAG
+#
+DEF PWR_FLAG #FLG 0 0 N N 1 F P
+F0 "#FLG" 0 270 30 H I C CNN
+F1 "PWR_FLAG" 0 230 30 H V C CNN
+DRAW
+X pwr 1 0 0 0 U 20 20 0 0 w
+P 3 0 1 0  0 0  0 100  0 100 N
+P 5 0 1 0  0 100  -100 150  0 200  100 150  0 100 N
+ENDDRAW
+ENDDEF
+#
+# R
+#
+DEF R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "R" 0 0 50 V V C CNN
+$FPLIST
+ R?
+ SM0603
+ SM0805
+ R?-*
+$ENDFPLIST
+DRAW
+S -40 150 40 -150 0 1 12 N
+X ~ 1 0 250 100 D 60 60 1 1 P
+X ~ 2 0 -250 100 U 60 60 1 1 P
+ENDDRAW
+ENDDEF
+#
+# VCVS
+#
+DEF VCVS E 0 40 Y Y 1 F N
+F0 "E" -200 100 50 H V C CNN
+F1 "VCVS" -200 -50 50 H V C CNN
+$FPLIST
+ 1_pin
+$ENDFPLIST
+DRAW
+S -100 100 100 -100 0 1 0 N
+X + 1 -300 50 200 R 35 35 1 1 P
+X - 2 300 50 200 L 35 35 1 1 P
+X +c 3 -50 -200 100 U 35 35 1 1 P
+X -c 4 50 -200 100 U 35 35 1 1 P
+ENDDRAW
+ENDDEF
+#
+#End Library
diff --git a/Differentiator/ua741-cache.lib b/Differentiator/ua741-cache.lib
new file mode 100644
index 0000000..9114d34
--- /dev/null
+++ b/Differentiator/ua741-cache.lib
@@ -0,0 +1,100 @@
+EESchema-LIBRARY Version 2.3  Date: Saturday 17 November 2012 08:10:48 AM IST
+#encoding utf-8
+#
+# C
+#
+DEF C C 0 10 N Y 1 F N
+F0 "C" 50 100 50 H V L CNN
+F1 "C" 50 -100 50 H V L CNN
+$FPLIST
+ SM*
+ C?
+ C1-1
+$ENDFPLIST
+DRAW
+P 2 0 1 10  -100 -30  100 -30 N
+P 2 0 1 10  -100 30  100 30 N
+X ~ 1 0 200 170 D 40 40 1 1 P
+X ~ 2 0 -200 170 U 40 40 1 1 P
+ENDDRAW
+ENDDEF
+#
+# GND
+#
+DEF ~GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 0 30 H I C CNN
+F1 "GND" 0 -70 30 H I C CNN
+DRAW
+P 4 0 1 0  -50 0  0 -50  50 0  -50 0 N
+X GND 1 0 0 0 U 30 30 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# PORT
+#
+DEF PORT U 0 40 Y Y 8 F N
+F0 "U" 0 -50 30 H V C CNN
+F1 "PORT" 0 0 30 H V C CNN
+DRAW
+A 325 225 285 -1421 -1278 0 1 0 N 100 50 150 0
+A 376 -275 356 1294 1408 0 1 0 N 150 0 100 -50
+S -100 50 100 -50 0 1 0 N
+X ~ 1 250 0 100 L 30 30 1 1 I
+X ~ 2 250 0 100 L 30 30 2 1 I
+X ~ 3 250 0 100 L 30 30 3 1 I
+X ~ 4 250 0 100 L 30 30 4 1 I
+X ~ 5 250 0 100 L 30 30 5 1 I
+X ~ 6 250 0 100 L 30 30 6 1 I
+X ~ 7 250 0 100 L 30 30 7 1 I
+X ~ 8 250 0 100 L 30 30 8 1 I
+ENDDRAW
+ENDDEF
+#
+# PWR_FLAG
+#
+DEF PWR_FLAG #FLG 0 0 N N 1 F P
+F0 "#FLG" 0 270 30 H I C CNN
+F1 "PWR_FLAG" 0 230 30 H V C CNN
+DRAW
+X pwr 1 0 0 0 U 20 20 0 0 w
+P 3 0 1 0  0 0  0 100  0 100 N
+P 5 0 1 0  0 100  -100 150  0 200  100 150  0 100 N
+ENDDRAW
+ENDDEF
+#
+# R
+#
+DEF R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "R" 0 0 50 V V C CNN
+$FPLIST
+ R?
+ SM0603
+ SM0805
+ R?-*
+$ENDFPLIST
+DRAW
+S -40 150 40 -150 0 1 12 N
+X ~ 1 0 250 100 D 60 60 1 1 P
+X ~ 2 0 -250 100 U 60 60 1 1 P
+ENDDRAW
+ENDDEF
+#
+# VCVS
+#
+DEF VCVS E 0 40 Y Y 1 F N
+F0 "E" -200 100 50 H V C CNN
+F1 "VCVS" -200 -50 50 H V C CNN
+$FPLIST
+ 1_pin
+$ENDFPLIST
+DRAW
+S -100 100 100 -100 0 1 0 N
+X + 1 -300 50 200 R 35 35 1 1 P
+X - 2 300 50 200 L 35 35 1 1 P
+X +c 3 -50 -200 100 U 35 35 1 1 P
+X -c 4 50 -200 100 U 35 35 1 1 P
+ENDDRAW
+ENDDEF
+#
+#End Library
diff --git a/Differentiator/ua741.bak b/Differentiator/ua741.bak
new file mode 100644
index 0000000..6be9280
--- /dev/null
+++ b/Differentiator/ua741.bak
@@ -0,0 +1,208 @@
+EESchema Schematic File Version 2  date Monday 17 December 2012 11:17:01 AM IST
+LIBS:power
+LIBS:device
+LIBS:transistors
+LIBS:conn
+LIBS:linear
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+LIBS:adc-dac
+LIBS:memory
+LIBS:xilinx
+LIBS:special
+LIBS:microcontrollers
+LIBS:dsp
+LIBS:microchip
+LIBS:analog_switches
+LIBS:motorola
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:valves
+LIBS:analogSpice
+LIBS:converterSpice
+LIBS:digitalSpice
+LIBS:linearSpice
+LIBS:measurementSpice
+LIBS:portSpice
+LIBS:sourcesSpice
+LIBS:ua741-cache
+EELAYER 25  0
+EELAYER END
+$Descr A4 11700 8267
+encoding utf-8
+Sheet 1 1
+Title ""
+Date "20 oct 2012"
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L PORT U1
+U 3 1 5082C027
+P 6250 2500
+F 0 "U1" H 6250 2450 30  0000 C CNN
+F 1 "PORT" H 6250 2500 30  0000 C CNN
+	3    6250 2500
+	-1   0    0    1   
+$EndComp
+$Comp
+L PORT U1
+U 1 1 5082C011
+P 2300 3100
+F 0 "U1" H 2300 3050 30  0000 C CNN
+F 1 "PORT" H 2300 3100 30  0000 C CNN
+	1    2300 3100
+	1    0    0    -1  
+$EndComp
+$Comp
+L PORT U1
+U 2 1 5082C00B
+P 2250 2600
+F 0 "U1" H 2250 2550 30  0000 C CNN
+F 1 "PORT" H 2250 2600 30  0000 C CNN
+	2    2250 2600
+	1    0    0    -1  
+$EndComp
+Connection ~ 3700 3200
+Wire Wire Line
+	3450 3200 3700 3200
+Connection ~ 5000 3300
+Wire Wire Line
+	3700 3300 5250 3300
+Wire Wire Line
+	5250 3300 5250 3200
+Connection ~ 4550 3300
+Wire Wire Line
+	5000 3300 5000 2950
+Connection ~ 3700 3300
+Wire Wire Line
+	4550 3300 4550 3100
+Wire Wire Line
+	3900 2500 3700 2500
+Wire Wire Line
+	3700 2500 3700 2550
+Wire Wire Line
+	3450 2900 3300 2900
+Wire Wire Line
+	3300 2900 3300 3200
+Wire Wire Line
+	3300 3200 2950 3200
+Connection ~ 2950 3100
+Wire Wire Line
+	2950 3200 2950 3100
+Wire Wire Line
+	3000 2600 2500 2600
+Wire Wire Line
+	2550 3100 3000 3100
+Wire Wire Line
+	2950 2600 2950 2500
+Connection ~ 2950 2600
+Wire Wire Line
+	2950 2500 3300 2500
+Wire Wire Line
+	3300 2500 3300 2800
+Wire Wire Line
+	3300 2800 3450 2800
+Wire Wire Line
+	3700 3150 3700 3400
+Wire Wire Line
+	4550 2500 4550 2700
+Wire Wire Line
+	4400 2500 5000 2500
+Wire Wire Line
+	5000 2500 5000 2850
+Connection ~ 4550 2500
+Wire Wire Line
+	5250 2600 5250 2500
+Wire Wire Line
+	5250 2500 5350 2500
+Wire Wire Line
+	5850 2500 6000 2500
+$Comp
+L PWR_FLAG #FLG01
+U 1 1 508152A0
+P 3450 3200
+F 0 "#FLG01" H 3450 3470 30  0001 C CNN
+F 1 "PWR_FLAG" H 3450 3430 30  0000 C CNN
+	1    3450 3200
+	1    0    0    -1  
+$EndComp
+$Comp
+L R Rout1
+U 1 1 50813F5B
+P 5600 2500
+F 0 "Rout1" V 5680 2500 50  0000 C CNN
+F 1 "75" V 5600 2500 50  0000 C CNN
+	1    5600 2500
+	0    1    1    0   
+$EndComp
+$Comp
+L VCVS Eout1
+U 1 1 50813F0F
+P 5200 2900
+F 0 "Eout1" H 5000 3000 50  0000 C CNN
+F 1 "1" H 5000 2850 50  0000 C CNN
+	1    5200 2900
+	0    1    1    0   
+$EndComp
+$Comp
+L C Cbw1
+U 1 1 50813EE0
+P 4550 2900
+F 0 "Cbw1" H 4600 3000 50  0000 L CNN
+F 1 "31.85e-9" H 4600 2800 50  0000 L CNN
+	1    4550 2900
+	1    0    0    -1  
+$EndComp
+$Comp
+L R Rbw1
+U 1 1 50813EAB
+P 4150 2500
+F 0 "Rbw1" V 4230 2500 50  0000 C CNN
+F 1 "0.5e6" V 4150 2500 50  0000 C CNN
+	1    4150 2500
+	0    1    1    0   
+$EndComp
+$Comp
+L GND #PWR02
+U 1 1 50813E0D
+P 3700 3400
+F 0 "#PWR02" H 3700 3400 30  0001 C CNN
+F 1 "GND" H 3700 3330 30  0001 C CNN
+	1    3700 3400
+	1    0    0    -1  
+$EndComp
+$Comp
+L VCVS Ein1
+U 1 1 50813D7C
+P 3650 2850
+F 0 "Ein1" H 3450 2950 50  0000 C CNN
+F 1 "100e3" H 3450 2800 50  0000 C CNN
+	1    3650 2850
+	0    1    1    0   
+$EndComp
+$Comp
+L R Rin1
+U 1 1 50813C57
+P 3000 2850
+F 0 "Rin1" V 3080 2850 50  0000 C CNN
+F 1 "2e6" V 3000 2850 50  0000 C CNN
+	1    3000 2850
+	1    0    0    -1  
+$EndComp
+$EndSCHEMATC
diff --git a/Differentiator/ua741.cir b/Differentiator/ua741.cir
new file mode 100644
index 0000000..de79742
--- /dev/null
+++ b/Differentiator/ua741.cir
@@ -0,0 +1,15 @@
+* EESchema Netlist Version 1.1 (Spice format) creation date: Monday 17 December 2012 11:16:58 AM IST
+
+* To exclude a component from the Spice Netlist add [Spice_Netlist_Enabled] user FIELD set to: N
+* To reorder the component spice node sequence add [Spice_Node_Sequence] user FIELD and define sequence: 2,1,0
+
+*Sheet Name:/
+U1  6 7 3 PORT		
+Rout1  3 2 75		
+Eout1  2 0 1 0 1		
+Cbw1  1 0 31.85e-9		
+Rbw1  1 4 0.5e6		
+Ein1  4 0 7 6 100e3		
+Rin1  7 6 2e6		
+
+.end
diff --git a/Differentiator/ua741.cir.ckt b/Differentiator/ua741.cir.ckt
new file mode 100644
index 0000000..3661a9a
--- /dev/null
+++ b/Differentiator/ua741.cir.ckt
@@ -0,0 +1,9 @@
+* eeschema netlist version 1.1 (spice format) creation date: monday 17 december 2012 11:16:58 am ist
+
+u1  6 7 3 port
+rout1  3 2 75
+eout1  2 0 1 0 1
+cbw1  1 0 31.85e-9
+rbw1  1 4 0.5e6
+ein1  4 0 7 6 100e3
+rin1  7 6 2e6
diff --git a/Differentiator/ua741.cir.out b/Differentiator/ua741.cir.out
new file mode 100644
index 0000000..72e6851
--- /dev/null
+++ b/Differentiator/ua741.cir.out
@@ -0,0 +1,18 @@
+* eeschema netlist version 1.1 (spice format) creation date: monday 17 december 2012 11:16:58 am ist
+
+* u1  6 7 3 port
+rout1  3 2 75
+eout1  2 0 1 0 1
+cbw1  1 0 31.85e-9
+rbw1  1 4 0.5e6
+ein1  4 0 7 6 100e3
+rin1  7 6 2e6
+.ac lin 0 0Hz 0Hz
+
+* Control Statements 
+.control
+run
+print allv > plot_data_v.txt
+print alli > plot_data_i.txt
+.endc
+.end
diff --git a/Differentiator/ua741.pro b/Differentiator/ua741.pro
new file mode 100644
index 0000000..5dbb81a
--- /dev/null
+++ b/Differentiator/ua741.pro
@@ -0,0 +1,72 @@
+update=Monday 17 December 2012 06:14:06 PM IST
+last_client=eeschema
+[eeschema]
+version=1
+LibDir=/home/yogesh/FreeEDA/library
+NetFmt=1
+HPGLSpd=20
+HPGLDm=15
+HPGLNum=1
+offX_A4=0
+offY_A4=0
+offX_A3=0
+offY_A3=0
+offX_A2=0
+offY_A2=0
+offX_A1=0
+offY_A1=0
+offX_A0=0
+offY_A0=0
+offX_A=0
+offY_A=0
+offX_B=0
+offY_B=0
+offX_C=0
+offY_C=0
+offX_D=0
+offY_D=0
+offX_E=0
+offY_E=0
+RptD_X=0
+RptD_Y=100
+RptLab=1
+LabSize=60
+[eeschema/libraries]
+LibName1=power
+LibName2=device
+LibName3=transistors
+LibName4=conn
+LibName5=linear
+LibName6=regul
+LibName7=74xx
+LibName8=cmos4000
+LibName9=adc-dac
+LibName10=memory
+LibName11=xilinx
+LibName12=special
+LibName13=microcontrollers
+LibName14=dsp
+LibName15=microchip
+LibName16=analog_switches
+LibName17=motorola
+LibName18=texas
+LibName19=intel
+LibName20=audio
+LibName21=interface
+LibName22=digital-audio
+LibName23=philips
+LibName24=display
+LibName25=cypress
+LibName26=siliconi
+LibName27=opto
+LibName28=atmel
+LibName29=contrib
+LibName30=valves
+LibName31=analogSpice
+LibName32=converterSpice
+LibName33=digitalSpice
+LibName34=linearSpice
+LibName35=measurementSpice
+LibName36=portSpice
+LibName37=sourcesSpice
+LibName38=analogXSpice
diff --git a/Differentiator/ua741.sch b/Differentiator/ua741.sch
new file mode 100644
index 0000000..7dfc5e1
--- /dev/null
+++ b/Differentiator/ua741.sch
@@ -0,0 +1,219 @@
+EESchema Schematic File Version 2  date Wednesday 19 December 2012 10:15:16 AM IST
+LIBS:power
+LIBS:device
+LIBS:transistors
+LIBS:conn
+LIBS:linear
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+LIBS:adc-dac
+LIBS:memory
+LIBS:xilinx
+LIBS:special
+LIBS:microcontrollers
+LIBS:dsp
+LIBS:microchip
+LIBS:analog_switches
+LIBS:motorola
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:valves
+LIBS:analogSpice
+LIBS:converterSpice
+LIBS:digitalSpice
+LIBS:linearSpice
+LIBS:measurementSpice
+LIBS:portSpice
+LIBS:sourcesSpice
+LIBS:analogXSpice
+LIBS:ua741-cache
+EELAYER 25  0
+EELAYER END
+$Descr A4 11700 8267
+encoding utf-8
+Sheet 1 1
+Title ""
+Date "19 dec 2012"
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+Text Notes 3800 2400 0    60   ~ 0
+Op-Amp
+Text Notes 3750 2850 0    60   ~ 0
+VCCS
+Text Notes 5800 2500 0    60   ~ 0
+out
+Text Notes 2750 3100 0    60   ~ 0
+-
+Text Notes 2700 2600 0    60   ~ 0
++
+$Comp
+L PORT U1
+U 6 1 5082C027
+P 6250 2500
+F 0 "U1" H 6250 2450 30  0000 C CNN
+F 1 "PORT" H 6250 2500 30  0000 C CNN
+	6    6250 2500
+	-1   0    0    1   
+$EndComp
+$Comp
+L PORT U1
+U 2 1 5082C011
+P 2300 3100
+F 0 "U1" H 2300 3050 30  0000 C CNN
+F 1 "PORT" H 2300 3100 30  0000 C CNN
+	2    2300 3100
+	1    0    0    -1  
+$EndComp
+$Comp
+L PORT U1
+U 3 1 5082C00B
+P 2250 2600
+F 0 "U1" H 2250 2550 30  0000 C CNN
+F 1 "PORT" H 2250 2600 30  0000 C CNN
+	3    2250 2600
+	1    0    0    -1  
+$EndComp
+Connection ~ 3700 3200
+Wire Wire Line
+	3450 3200 3700 3200
+Connection ~ 5000 3300
+Wire Wire Line
+	3700 3300 5250 3300
+Wire Wire Line
+	5250 3300 5250 3200
+Connection ~ 4550 3300
+Wire Wire Line
+	5000 3300 5000 2950
+Connection ~ 3700 3300
+Wire Wire Line
+	4550 3300 4550 3100
+Wire Wire Line
+	3900 2500 3700 2500
+Wire Wire Line
+	3700 2500 3700 2550
+Wire Wire Line
+	3450 2900 3300 2900
+Wire Wire Line
+	3300 2900 3300 3200
+Wire Wire Line
+	3300 3200 2950 3200
+Connection ~ 2950 3100
+Wire Wire Line
+	2950 3200 2950 3100
+Wire Wire Line
+	3000 2600 2500 2600
+Wire Wire Line
+	2550 3100 3000 3100
+Wire Wire Line
+	2950 2600 2950 2500
+Connection ~ 2950 2600
+Wire Wire Line
+	2950 2500 3300 2500
+Wire Wire Line
+	3300 2500 3300 2800
+Wire Wire Line
+	3300 2800 3450 2800
+Wire Wire Line
+	3700 3150 3700 3400
+Wire Wire Line
+	4550 2500 4550 2700
+Wire Wire Line
+	4400 2500 5000 2500
+Wire Wire Line
+	5000 2500 5000 2850
+Connection ~ 4550 2500
+Wire Wire Line
+	5250 2600 5250 2500
+Wire Wire Line
+	5250 2500 5350 2500
+Wire Wire Line
+	5850 2500 6000 2500
+$Comp
+L PWR_FLAG #FLG01
+U 1 1 508152A0
+P 3450 3200
+F 0 "#FLG01" H 3450 3470 30  0001 C CNN
+F 1 "PWR_FLAG" H 3450 3430 30  0000 C CNN
+	1    3450 3200
+	1    0    0    -1  
+$EndComp
+$Comp
+L R Rout1
+U 1 1 50813F5B
+P 5600 2500
+F 0 "Rout1" V 5680 2500 50  0000 C CNN
+F 1 "75" V 5600 2500 50  0000 C CNN
+	1    5600 2500
+	0    1    1    0   
+$EndComp
+$Comp
+L VCVS Eout1
+U 1 1 50813F0F
+P 5200 2900
+F 0 "Eout1" H 5000 3000 50  0000 C CNN
+F 1 "1" H 5000 2850 50  0000 C CNN
+	1    5200 2900
+	0    1    1    0   
+$EndComp
+$Comp
+L C Cbw1
+U 1 1 50813EE0
+P 4550 2900
+F 0 "Cbw1" H 4600 3000 50  0000 L CNN
+F 1 "31.85e-9" H 4600 2800 50  0000 L CNN
+	1    4550 2900
+	1    0    0    -1  
+$EndComp
+$Comp
+L R Rbw1
+U 1 1 50813EAB
+P 4150 2500
+F 0 "Rbw1" V 4230 2500 50  0000 C CNN
+F 1 "0.5e6" V 4150 2500 50  0000 C CNN
+	1    4150 2500
+	0    1    1    0   
+$EndComp
+$Comp
+L GND #PWR02
+U 1 1 50813E0D
+P 3700 3400
+F 0 "#PWR02" H 3700 3400 30  0001 C CNN
+F 1 "GND" H 3700 3330 30  0001 C CNN
+	1    3700 3400
+	1    0    0    -1  
+$EndComp
+$Comp
+L VCVS Ein1
+U 1 1 50813D7C
+P 3650 2850
+F 0 "Ein1" H 3450 2950 50  0000 C CNN
+F 1 "100e3" H 3450 2800 50  0000 C CNN
+	1    3650 2850
+	0    1    1    0   
+$EndComp
+$Comp
+L R Rin1
+U 1 1 50813C57
+P 3000 2850
+F 0 "Rin1" V 3080 2850 50  0000 C CNN
+F 1 "2e6" V 3000 2850 50  0000 C CNN
+	1    3000 2850
+	1    0    0    -1  
+$EndComp
+$EndSCHEMATC
diff --git a/Differentiator/ua741.sub b/Differentiator/ua741.sub
new file mode 100644
index 0000000..ad26c00
--- /dev/null
+++ b/Differentiator/ua741.sub
@@ -0,0 +1,12 @@
+* Subcircuit ua741
+.subckt ua741 6 7 3 
+* eeschema netlist version 1.1 (spice format) creation date: monday 17 december 2012 11:16:58 am ist
+rout1  3 2 75
+eout1  2 0 1 0 1
+cbw1  1 0 31.85e-9
+rbw1  1 4 0.5e6
+ein1  4 0 7 6 100e3
+rin1  7 6 2e6
+* Control Statements
+
+.ends ua741
\ No newline at end of file
diff --git a/Differentiator/ua741_Previous_Values.xml b/Differentiator/ua741_Previous_Values.xml
new file mode 100644
index 0000000..9c7bb53
--- /dev/null
+++ b/Differentiator/ua741_Previous_Values.xml
@@ -0,0 +1 @@
+<KicadtoNgspice><source /><model /><devicemodel /><analysis><ac><field1 name="Lin">true</field1><field2 name="Dec">false</field2><field3 name="Oct">false</field3><field4 name="Start Frequency" /><field5 name="Stop Frequency" /><field6 name="No. of points" /><field7 name="Start Fre Combo">Hz</field7><field8 name="Stop Fre Combo">Hz</field8></ac><dc><field1 name="Source Name" /><field2 name="Start" /><field3 name="Increment" /><field4 name="Stop" /><field5 name="Operating Point">False</field5><field6 name="Start Combo">Volts or Amperes</field6><field7 name="Increment Combo">Volts or Amperes</field7><field8 name="Stop Combo">Volts or Amperes</field8></dc><tran><field1 name="Start Time" /><field2 name="Step Time" /><field3 name="Stop Time" /><field4 name="Start Combo">Sec</field4><field5 name="Step Combo">Sec</field5><field6 name="Stop Combo">Sec</field6></tran></analysis></KicadtoNgspice>
\ No newline at end of file