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-rw-r--r--library/SubcircuitLibrary/TL331_sub/D.lib2
-rw-r--r--library/SubcircuitLibrary/TL331_sub/NPN.lib4
-rw-r--r--library/SubcircuitLibrary/TL331_sub/PNP.lib4
-rw-r--r--library/SubcircuitLibrary/TL331_sub/TL331-cache.lib160
-rw-r--r--library/SubcircuitLibrary/TL331_sub/TL331.cir28
-rw-r--r--library/SubcircuitLibrary/TL331_sub/TL331.cir.out32
-rw-r--r--library/SubcircuitLibrary/TL331_sub/TL331.pro73
-rw-r--r--library/SubcircuitLibrary/TL331_sub/TL331.sch417
-rw-r--r--library/SubcircuitLibrary/TL331_sub/TL331.sub26
-rw-r--r--library/SubcircuitLibrary/TL331_sub/TL331_Previous_Values.xml1
-rw-r--r--library/SubcircuitLibrary/TL331_sub/analysis1
11 files changed, 748 insertions, 0 deletions
diff --git a/library/SubcircuitLibrary/TL331_sub/D.lib b/library/SubcircuitLibrary/TL331_sub/D.lib
new file mode 100644
index 00000000..f53bf3e0
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/D.lib
@@ -0,0 +1,2 @@
+.model 1N4148 D(is=2.495E-09 rs=4.755E-01 n=1.679E+00 tt=3.030E-09 cjo=1.700E-12 vj=1 m=1.959E-01 bv=1.000E+02 ibv=1.000E-04)
+
diff --git a/library/SubcircuitLibrary/TL331_sub/NPN.lib b/library/SubcircuitLibrary/TL331_sub/NPN.lib
new file mode 100644
index 00000000..be5f3073
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/NPN.lib
@@ -0,0 +1,4 @@
+.model Q2N2222 NPN( Is=14.34f Xti=3 Eg=1.11 Vaf=74.03 Bf=400 Ne=1.307
++ Ise=14.34f Ikf=0.2847 Xtb=1.5 Br=6.092 Nc=2 Isc=0 Ikr=0 Rc=1 Cjc=7.306p
++ Mjc=0.3416 Vjc=0.75 Fc=0.5 Cje=22.01p Mje=0.377 Vje=0.75 Tr=46.91n Tf=411.1p
++ Itf=0.6 Vtf=1.7 Xtf=3 Rb=10)
diff --git a/library/SubcircuitLibrary/TL331_sub/PNP.lib b/library/SubcircuitLibrary/TL331_sub/PNP.lib
new file mode 100644
index 00000000..7edda0ea
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/PNP.lib
@@ -0,0 +1,4 @@
+.model Q2N2907A PNP(Is=650.6E-18 Xti=3 Eg=1.11 Vaf=115.7 Bf=231.7 Ne=1.829
++ Ise=54.81f Ikf=1.079 Xtb=1.5 Br=3.563 Nc=2 Isc=0 Ikr=0 Rc=.715
++ Cjc=14.76p Mjc=.5383 Vjc=.75 Fc=.5 Cje=19.82p Mje=.3357 Vje=.75
++ Tr=111.3n Tf=603.7p Itf=.65 Vtf=5 Xtf=1.7 Rb=10)
diff --git a/library/SubcircuitLibrary/TL331_sub/TL331-cache.lib b/library/SubcircuitLibrary/TL331_sub/TL331-cache.lib
new file mode 100644
index 00000000..da24d97c
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/TL331-cache.lib
@@ -0,0 +1,160 @@
+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# 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 I C CNN
+F3 "" 0 0 50 H I 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
+#
+# PORT
+#
+DEF PORT U 0 40 Y Y 26 F N
+F0 "U" 50 100 30 H V C CNN
+F1 "PORT" 0 0 30 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 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 B
+X ~ 2 250 0 100 L 30 30 2 1 B
+X ~ 3 250 0 100 L 30 30 3 1 B
+X ~ 4 250 0 100 L 30 30 4 1 B
+X ~ 5 250 0 100 L 30 30 5 1 B
+X ~ 6 250 0 100 L 30 30 6 1 B
+X ~ 7 250 0 100 L 30 30 7 1 B
+X ~ 8 250 0 100 L 30 30 8 1 B
+X ~ 9 250 0 100 L 30 30 9 1 B
+X ~ 10 250 0 100 L 30 30 10 1 B
+X ~ 11 250 0 100 L 30 30 11 1 B
+X ~ 12 250 0 100 L 30 30 12 1 B
+X ~ 13 250 0 100 L 30 30 13 1 B
+X ~ 14 250 0 100 L 30 30 14 1 B
+X ~ 15 250 0 100 L 30 30 15 1 B
+X ~ 16 250 0 100 L 30 30 16 1 B
+X ~ 17 250 0 100 L 30 30 17 1 B
+X ~ 18 250 0 100 L 30 30 18 1 B
+X ~ 19 250 0 100 L 30 30 19 1 B
+X ~ 20 250 0 100 L 30 30 20 1 B
+X ~ 21 250 0 100 L 30 30 21 1 B
+X ~ 22 250 0 100 L 30 30 22 1 B
+X ~ 23 250 0 100 L 30 30 23 1 B
+X ~ 24 250 0 100 L 30 30 24 1 B
+X ~ 25 250 0 100 L 30 30 25 1 B
+X ~ 26 250 0 100 L 30 30 26 1 B
+ENDDRAW
+ENDDEF
+#
+# dc
+#
+DEF dc I 0 40 Y Y 1 F N
+F0 "I" -200 100 60 H V C CNN
+F1 "dc" -200 -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
+C 0 0 150 0 1 0 N
+P 2 0 1 0 0 -100 0 -100 N
+P 2 0 1 0 0 100 -50 50 N
+P 2 0 1 0 0 100 0 -100 N
+P 2 0 1 0 0 100 50 50 N
+X ~ 1 0 450 300 D 50 50 1 1 P
+X ~ 2 0 -450 300 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# eSim_Diode
+#
+DEF eSim_Diode D 0 40 N N 1 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "eSim_Diode" 0 -100 50 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+$FPLIST
+ TO-???*
+ *SingleDiode
+ *_Diode_*
+ *SingleDiode*
+ D_*
+$ENDFPLIST
+DRAW
+T 0 -100 50 60 0 0 0 A Normal 0 C C
+T 0 100 50 60 0 0 0 K Normal 0 C C
+P 2 0 1 6 50 50 50 -50 N
+P 3 0 1 0 -50 50 50 0 -50 -50 F
+X A 1 -150 0 100 R 40 40 1 1 P
+X K 2 150 0 100 L 40 40 1 1 P
+ENDDRAW
+ENDDEF
+#
+# eSim_NPN
+#
+DEF eSim_NPN Q 0 0 Y N 1 F N
+F0 "Q" -100 50 50 H V R CNN
+F1 "eSim_NPN" -50 150 50 H V R CNN
+F2 "" 200 100 29 H V C CNN
+F3 "" 0 0 60 H V C CNN
+ALIAS BC547 Q2N2222
+DRAW
+C 50 0 111 0 1 10 N
+P 2 0 1 0 25 25 100 100 N
+P 3 0 1 0 25 -25 100 -100 100 -100 N
+P 3 0 1 20 25 75 25 -75 25 -75 N
+P 5 0 1 0 50 -70 70 -50 90 -90 50 -70 50 -70 F
+X C 1 100 200 100 D 50 50 1 1 P
+X B 2 -200 0 225 R 50 50 1 1 P
+X E 3 100 -200 100 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# eSim_PNP
+#
+DEF eSim_PNP Q 0 0 Y N 1 F N
+F0 "Q" -100 50 50 H V R CNN
+F1 "eSim_PNP" -50 150 50 H V R CNN
+F2 "" 200 100 29 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+C 50 0 111 0 1 10 N
+P 2 0 1 0 25 25 100 100 N
+P 3 0 1 0 25 -25 100 -100 100 -100 N
+P 3 0 1 20 25 75 25 -75 25 -75 N
+P 5 0 1 0 90 -70 70 -90 50 -50 90 -70 90 -70 F
+X C 1 100 200 100 D 50 50 1 1 P
+X B 2 -200 0 225 R 50 50 1 1 P
+X E 3 100 -200 100 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# eSim_R
+#
+DEF eSim_R R 0 0 N Y 1 F N
+F0 "R" 50 130 50 H V C CNN
+F1 "eSim_R" 50 -50 50 H V C CNN
+F2 "" 50 -20 30 H V C CNN
+F3 "" 50 50 30 V V C CNN
+ALIAS resistor
+$FPLIST
+ R_*
+ Resistor_*
+$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
+#
+#End Library
diff --git a/library/SubcircuitLibrary/TL331_sub/TL331.cir b/library/SubcircuitLibrary/TL331_sub/TL331.cir
new file mode 100644
index 00000000..83280b33
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/TL331.cir
@@ -0,0 +1,28 @@
+* D:\FOSSEE\eSim\library\SubcircuitLibrary\TL331\TL331.cir
+
+* EESchema Netlist Version 1.1 (Spice format) creation date: 06/12/24 00:57:13
+
+* 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: /
+D2 Net-_D2-Pad1_ Net-_D1-Pad2_ 10u
+I2 Net-_I1-Pad1_ Net-_I2-Pad2_ 80u
+D3 Net-_D3-Pad1_ Net-_D3-Pad2_ 10u
+Q2 Net-_Q2-Pad1_ Net-_D1-Pad2_ Net-_I2-Pad2_ eSim_PNP
+Q5 Net-_Q4-Pad1_ Net-_D3-Pad2_ Net-_I2-Pad2_ eSim_PNP
+D1 Net-_D1-Pad1_ Net-_D1-Pad2_ eSim_Diode
+Q1 GND Net-_D1-Pad1_ Net-_D1-Pad2_ eSim_PNP
+D4 Net-_D4-Pad1_ Net-_D3-Pad2_ eSim_Diode
+Q6 GND Net-_D4-Pad1_ Net-_D3-Pad2_ eSim_PNP
+I4 Net-_I1-Pad1_ Net-_I4-Pad2_ 80u
+Q3 Net-_Q2-Pad1_ Net-_Q2-Pad1_ Net-_Q3-Pad3_ eSim_NPN
+Q4 Net-_Q4-Pad1_ Net-_Q2-Pad1_ Net-_Q3-Pad3_ eSim_NPN
+Q7 Net-_I4-Pad2_ Net-_Q4-Pad1_ Net-_Q3-Pad3_ eSim_NPN
+Q8 Net-_Q8-Pad1_ Net-_I4-Pad2_ Net-_Q3-Pad3_ eSim_NPN
+R1 Net-_I1-Pad1_ Net-_Q8-Pad1_ 300
+I1 Net-_I1-Pad1_ Net-_D2-Pad1_ 80u
+I3 Net-_I1-Pad1_ Net-_D3-Pad1_ 80u
+U1 Net-_D1-Pad1_ Net-_D4-Pad1_ Net-_Q3-Pad3_ Net-_I1-Pad1_ Net-_Q8-Pad1_ PORT
+
+.end
diff --git a/library/SubcircuitLibrary/TL331_sub/TL331.cir.out b/library/SubcircuitLibrary/TL331_sub/TL331.cir.out
new file mode 100644
index 00000000..c83f3e00
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/TL331.cir.out
@@ -0,0 +1,32 @@
+* d:\fossee\esim\library\subcircuitlibrary\tl331\tl331.cir
+
+.include PNP.lib
+.include NPN.lib
+.include D.lib
+d2 net-_d2-pad1_ net-_d1-pad2_ 1N4148
+i2 net-_i1-pad1_ net-_i2-pad2_ 80u
+d3 net-_d3-pad1_ net-_d3-pad2_ 1N4148
+q2 net-_q2-pad1_ net-_d1-pad2_ net-_i2-pad2_ Q2N2907A
+q5 net-_q4-pad1_ net-_d3-pad2_ net-_i2-pad2_ Q2N2907A
+d1 net-_d1-pad1_ net-_d1-pad2_ 1N4148
+q1 gnd net-_d1-pad1_ net-_d1-pad2_ Q2N2907A
+d4 net-_d4-pad1_ net-_d3-pad2_ 1N4148
+q6 gnd net-_d4-pad1_ net-_d3-pad2_ Q2N2907A
+i4 net-_i1-pad1_ net-_i4-pad2_ 80u
+q3 net-_q2-pad1_ net-_q2-pad1_ net-_q3-pad3_ Q2N2222
+q4 net-_q4-pad1_ net-_q2-pad1_ net-_q3-pad3_ Q2N2222
+q7 net-_i4-pad2_ net-_q4-pad1_ net-_q3-pad3_ Q2N2222
+q8 net-_q8-pad1_ net-_i4-pad2_ net-_q3-pad3_ Q2N2222
+r1 net-_i1-pad1_ net-_q8-pad1_ 300
+i1 net-_i1-pad1_ net-_d2-pad1_ 80u
+i3 net-_i1-pad1_ net-_d3-pad1_ 80u
+* u1 net-_d1-pad1_ net-_d4-pad1_ net-_q3-pad3_ net-_i1-pad1_ net-_q8-pad1_ port
+.tran 0e-00 0e-09 0e-00
+
+* Control Statements
+.control
+run
+print allv > plot_data_v.txt
+print alli > plot_data_i.txt
+.endc
+.end
diff --git a/library/SubcircuitLibrary/TL331_sub/TL331.pro b/library/SubcircuitLibrary/TL331_sub/TL331.pro
new file mode 100644
index 00000000..e27a398b
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/TL331.pro
@@ -0,0 +1,73 @@
+update=22/05/2015 07:44:53
+version=1
+last_client=kicad
+[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=adc-dac
+LibName2=memory
+LibName3=xilinx
+LibName4=microcontrollers
+LibName5=dsp
+LibName6=microchip
+LibName7=analog_switches
+LibName8=motorola
+LibName9=texas
+LibName10=intel
+LibName11=audio
+LibName12=interface
+LibName13=digital-audio
+LibName14=philips
+LibName15=display
+LibName16=cypress
+LibName17=siliconi
+LibName18=opto
+LibName19=atmel
+LibName20=contrib
+LibName21=power
+LibName22=eSim_Plot
+LibName23=transistors
+LibName24=conn
+LibName25=eSim_User
+LibName26=regul
+LibName27=74xx
+LibName28=cmos4000
+LibName29=eSim_Analog
+LibName30=eSim_Devices
+LibName31=eSim_Digital
+LibName32=eSim_Hybrid
+LibName33=eSim_Miscellaneous
+LibName34=eSim_Power
+LibName35=eSim_Sources
+LibName36=eSim_Subckt
+LibName37=eSim_Nghdl
+LibName38=eSim_Ngveri
+LibName39=eSim_SKY130
+LibName40=eSim_SKY130_Subckts
diff --git a/library/SubcircuitLibrary/TL331_sub/TL331.sch b/library/SubcircuitLibrary/TL331_sub/TL331.sch
new file mode 100644
index 00000000..118b584f
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/TL331.sch
@@ -0,0 +1,417 @@
+EESchema Schematic File Version 2
+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:eSim_Plot
+LIBS:transistors
+LIBS:conn
+LIBS:eSim_User
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+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_Nghdl
+LIBS:eSim_Ngveri
+LIBS:eSim_SKY130
+LIBS:eSim_SKY130_Subckts
+LIBS:TL331-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
+$Comp
+L eSim_Diode D2
+U 1 1 6668A495
+P 4700 2900
+F 0 "D2" H 4700 3000 50 0000 C CNN
+F 1 "10u" H 4700 2800 50 0000 C CIN
+F 2 "" H 4700 2900 60 0000 C CNN
+F 3 "" H 4700 2900 60 0000 C CNN
+ 1 4700 2900
+ 0 1 1 0
+$EndComp
+$Comp
+L dc I2
+U 1 1 6668A496
+P 5900 2050
+F 0 "I2" H 5700 2150 60 0000 C CNN
+F 1 "80u" H 5700 2000 60 0000 C CNN
+F 2 "R1" H 5600 2050 60 0000 C CNN
+F 3 "" H 5900 2050 60 0000 C CNN
+ 1 5900 2050
+ -1 0 0 -1
+$EndComp
+$Comp
+L eSim_Diode D3
+U 1 1 6668A497
+P 6900 2800
+F 0 "D3" H 6900 2900 50 0000 C CNN
+F 1 "10u" H 6900 2700 50 0000 C CNN
+F 2 "" H 6900 2800 60 0000 C CNN
+F 3 "" H 6900 2800 60 0000 C CNN
+ 1 6900 2800
+ 0 1 1 0
+$EndComp
+$Comp
+L eSim_PNP Q2
+U 1 1 6668A498
+P 5300 3100
+F 0 "Q2" H 5200 3150 50 0000 R CNN
+F 1 "eSim_PNP" H 5250 3250 50 0000 R CNN
+F 2 "" H 5500 3200 29 0000 C CNN
+F 3 "" H 5300 3100 60 0000 C CNN
+ 1 5300 3100
+ 1 0 0 1
+$EndComp
+$Comp
+L eSim_PNP Q5
+U 1 1 6668A499
+P 6500 3100
+F 0 "Q5" H 6400 3150 50 0000 R CNN
+F 1 "eSim_PNP" H 6450 3250 50 0000 R CNN
+F 2 "" H 6700 3200 29 0000 C CNN
+F 3 "" H 6500 3100 60 0000 C CNN
+ 1 6500 3100
+ -1 0 0 1
+$EndComp
+$Comp
+L eSim_Diode D1
+U 1 1 6668A49A
+P 4200 3100
+F 0 "D1" H 4200 3200 50 0000 C CNN
+F 1 "eSim_Diode" H 4200 3000 50 0000 C CNN
+F 2 "" H 4200 3100 60 0000 C CNN
+F 3 "" H 4200 3100 60 0000 C CNN
+ 1 4200 3100
+ 1 0 0 1
+$EndComp
+$Comp
+L eSim_PNP Q1
+U 1 1 6668A49B
+P 4600 3450
+F 0 "Q1" H 4500 3500 50 0000 R CNN
+F 1 "eSim_PNP" H 4550 3600 50 0000 R CNN
+F 2 "" H 4800 3550 29 0000 C CNN
+F 3 "" H 4600 3450 60 0000 C CNN
+ 1 4600 3450
+ 1 0 0 1
+$EndComp
+$Comp
+L GND #PWR1
+U 1 1 6668A49C
+P 4700 3950
+F 0 "#PWR1" H 4700 3700 50 0001 C CNN
+F 1 "GND" H 4700 3800 50 0000 C CNN
+F 2 "" H 4700 3950 50 0001 C CNN
+F 3 "" H 4700 3950 50 0001 C CNN
+ 1 4700 3950
+ 1 0 0 -1
+$EndComp
+$Comp
+L eSim_Diode D4
+U 1 1 6668A49D
+P 7400 3100
+F 0 "D4" H 7400 3200 50 0000 C CNN
+F 1 "eSim_Diode" H 7400 3000 50 0000 C CNN
+F 2 "" H 7400 3100 60 0000 C CNN
+F 3 "" H 7400 3100 60 0000 C CNN
+ 1 7400 3100
+ -1 0 0 1
+$EndComp
+$Comp
+L eSim_PNP Q6
+U 1 1 6668A49E
+P 7000 3500
+F 0 "Q6" H 6900 3550 50 0000 R CNN
+F 1 "eSim_PNP" H 6950 3650 50 0000 R CNN
+F 2 "" H 7200 3600 29 0000 C CNN
+F 3 "" H 7000 3500 60 0000 C CNN
+ 1 7000 3500
+ -1 0 0 1
+$EndComp
+$Comp
+L GND #PWR2
+U 1 1 6668A4A1
+P 6900 4000
+F 0 "#PWR2" H 6900 3750 50 0001 C CNN
+F 1 "GND" H 6900 3850 50 0000 C CNN
+F 2 "" H 6900 4000 50 0001 C CNN
+F 3 "" H 6900 4000 50 0001 C CNN
+ 1 6900 4000
+ 1 0 0 -1
+$EndComp
+$Comp
+L dc I4
+U 1 1 6668A4A2
+P 8600 2550
+F 0 "I4" H 8400 2650 60 0000 C CNN
+F 1 "80u" H 8400 2500 60 0000 C CNN
+F 2 "R1" H 8300 2550 60 0000 C CNN
+F 3 "" H 8600 2550 60 0000 C CNN
+ 1 8600 2550
+ -1 0 0 -1
+$EndComp
+$Comp
+L eSim_NPN Q3
+U 1 1 6668A4A3
+P 5500 5500
+F 0 "Q3" H 5400 5550 50 0000 R CNN
+F 1 "eSim_NPN" H 5450 5650 50 0000 R CNN
+F 2 "" H 5700 5600 29 0000 C CNN
+F 3 "" H 5500 5500 60 0000 C CNN
+ 1 5500 5500
+ -1 0 0 -1
+$EndComp
+$Comp
+L eSim_NPN Q4
+U 1 1 6668A4A4
+P 6300 5500
+F 0 "Q4" H 6200 5550 50 0000 R CNN
+F 1 "eSim_NPN" H 6250 5650 50 0000 R CNN
+F 2 "" H 6500 5600 29 0000 C CNN
+F 3 "" H 6300 5500 60 0000 C CNN
+ 1 6300 5500
+ 1 0 0 -1
+$EndComp
+$Comp
+L eSim_NPN Q7
+U 1 1 6668A4A5
+P 8300 4900
+F 0 "Q7" H 8200 4950 50 0000 R CNN
+F 1 "eSim_NPN" H 8250 5050 50 0000 R CNN
+F 2 "" H 8500 5000 29 0000 C CNN
+F 3 "" H 8300 4900 60 0000 C CNN
+ 1 8300 4900
+ 1 0 0 -1
+$EndComp
+$Comp
+L eSim_NPN Q8
+U 1 1 6668A4A6
+P 9000 4200
+F 0 "Q8" H 8900 4250 50 0000 R CNN
+F 1 "eSim_NPN" H 8950 4350 50 0000 R CNN
+F 2 "" H 9200 4300 29 0000 C CNN
+F 3 "" H 9000 4200 60 0000 C CNN
+ 1 9000 4200
+ 1 0 0 -1
+$EndComp
+$Comp
+L resistor R1
+U 1 1 6668A4AE
+P 9150 3000
+F 0 "R1" H 9200 3130 50 0000 C CNN
+F 1 "300" H 9200 2950 50 0000 C CNN
+F 2 "" H 9200 2980 30 0000 C CNN
+F 3 "" V 9200 3050 30 0000 C CNN
+ 1 9150 3000
+ 0 1 1 0
+$EndComp
+Wire Wire Line
+ 5400 2900 6400 2900
+Wire Wire Line
+ 5900 2500 5900 2900
+Connection ~ 5900 2900
+Wire Wire Line
+ 4350 3100 5100 3100
+Wire Wire Line
+ 4700 3050 4700 3250
+Connection ~ 4700 3100
+Wire Wire Line
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+$Comp
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diff --git a/library/SubcircuitLibrary/TL331_sub/TL331.sub b/library/SubcircuitLibrary/TL331_sub/TL331.sub
new file mode 100644
index 00000000..32456e21
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/TL331.sub
@@ -0,0 +1,26 @@
+* Subcircuit TL331
+.subckt TL331 net-_d1-pad1_ net-_d4-pad1_ net-_q3-pad3_ net-_i1-pad1_ net-_q8-pad1_
+* d:\fossee\esim\library\subcircuitlibrary\tl331\tl331.cir
+.include PNP.lib
+.include NPN.lib
+.include D.lib
+d2 net-_d2-pad1_ net-_d1-pad2_ 1N4148
+i2 net-_i1-pad1_ net-_i2-pad2_ 80u
+d3 net-_d3-pad1_ net-_d3-pad2_ 1N4148
+q2 net-_q2-pad1_ net-_d1-pad2_ net-_i2-pad2_ Q2N2907A
+q5 net-_q4-pad1_ net-_d3-pad2_ net-_i2-pad2_ Q2N2907A
+d1 net-_d1-pad1_ net-_d1-pad2_ 1N4148
+q1 gnd net-_d1-pad1_ net-_d1-pad2_ Q2N2907A
+d4 net-_d4-pad1_ net-_d3-pad2_ 1N4148
+q6 gnd net-_d4-pad1_ net-_d3-pad2_ Q2N2907A
+i4 net-_i1-pad1_ net-_i4-pad2_ 80u
+q3 net-_q2-pad1_ net-_q2-pad1_ net-_q3-pad3_ Q2N2222
+q4 net-_q4-pad1_ net-_q2-pad1_ net-_q3-pad3_ Q2N2222
+q7 net-_i4-pad2_ net-_q4-pad1_ net-_q3-pad3_ Q2N2222
+q8 net-_q8-pad1_ net-_i4-pad2_ net-_q3-pad3_ Q2N2222
+r1 net-_i1-pad1_ net-_q8-pad1_ 300
+i1 net-_i1-pad1_ net-_d2-pad1_ 80u
+i3 net-_i1-pad1_ net-_d3-pad1_ 80u
+* Control Statements
+
+.ends TL331 \ No newline at end of file
diff --git a/library/SubcircuitLibrary/TL331_sub/TL331_Previous_Values.xml b/library/SubcircuitLibrary/TL331_sub/TL331_Previous_Values.xml
new file mode 100644
index 00000000..a8bf8200
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/TL331_Previous_Values.xml
@@ -0,0 +1 @@
+<KicadtoNgspice><source><i2 name="Source type">80u</i2><i4 name="Source type">80u</i4><i1 name="Source type">80u</i1><i3 name="Source type">80u</i3></source><model /><devicemodel><d2><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Diode\D.lib</field></d2><d3><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Diode\D.lib</field></d3><q2><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\PNP.lib</field></q2><q5><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\PNP.lib</field></q5><d1><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Diode\D.lib</field></d1><q1><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\PNP.lib</field></q1><d4><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Diode\D.lib</field></d4><q6><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\PNP.lib</field></q6><q3><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\NPN.lib</field></q3><q4><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\NPN.lib</field></q4><q7><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\NPN.lib</field></q7><q8><field>D:\FOSSEE\eSim\library\deviceModelLibrary\Transistor\NPN.lib</field></q8></devicemodel><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" /><field2 name="Step Time" /><field3 name="Stop Time" /><field4 name="Start Combo">sec</field4><field5 name="Step Combo">sec</field5><field6 name="Stop Combo">ns</field6></tran></analysis></KicadtoNgspice> \ No newline at end of file
diff --git a/library/SubcircuitLibrary/TL331_sub/analysis b/library/SubcircuitLibrary/TL331_sub/analysis
new file mode 100644
index 00000000..657c34c3
--- /dev/null
+++ b/library/SubcircuitLibrary/TL331_sub/analysis
@@ -0,0 +1 @@
+.tran 0e-00 0e-09 0e-00 \ No newline at end of file