From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 863/CH2/EX2.10/Ex2_10.sce     | 16 ++++++++++++++++
 863/CH2/EX2.10/Ex2_10.txt     | 16 ++++++++++++++++
 863/CH2/EX2.10/Result2_10.txt |  8 ++++++++
 863/CH2/EX2.11/Ex2_11.sce     | 16 ++++++++++++++++
 863/CH2/EX2.11/Ex2_11.txt     | 16 ++++++++++++++++
 863/CH2/EX2.11/Result2_11.txt |  8 ++++++++
 863/CH2/EX2.12/Ex2_12.sce     | 15 +++++++++++++++
 863/CH2/EX2.12/Ex2_12.txt     | 15 +++++++++++++++
 863/CH2/EX2.12/Result2_12.txt |  8 ++++++++
 863/CH2/EX2.3/Ex2_3.sce       | 12 ++++++++++++
 863/CH2/EX2.3/Ex2_3.txt       | 12 ++++++++++++
 863/CH2/EX2.3/Result2_3.txt   |  3 +++
 863/CH2/EX2.4/Ex2_4.sce       | 18 ++++++++++++++++++
 863/CH2/EX2.4/Ex2_4.txt       | 18 ++++++++++++++++++
 863/CH2/EX2.4/Result2_4.txt   |  6 ++++++
 863/CH2/EX2.5/Ex2_5.sce       | 12 ++++++++++++
 863/CH2/EX2.5/Ex2_5.txt       | 12 ++++++++++++
 863/CH2/EX2.5/Result2_5.txt   |  8 ++++++++
 863/CH2/EX2.6/Ex2_6.sce       | 11 +++++++++++
 863/CH2/EX2.6/Ex2_6.txt       | 11 +++++++++++
 863/CH2/EX2.6/Result2_6.txt   |  3 +++
 863/CH2/EX2.7/Ex2_7.sce       |  9 +++++++++
 863/CH2/EX2.7/Ex2_7.txt       |  9 +++++++++
 863/CH2/EX2.7/Result2_7.txt   |  4 ++++
 863/CH2/EX2.8/Ex2_8.sce       | 16 ++++++++++++++++
 863/CH2/EX2.8/Ex2_8.txt       | 16 ++++++++++++++++
 863/CH2/EX2.8/Result2_8.txt   |  4 ++++
 863/CH2/EX2.9/Ex2_9.sce       | 12 ++++++++++++
 863/CH2/EX2.9/Ex2_9.txt       | 12 ++++++++++++
 863/CH2/EX2.9/Result2_9.txt   |  6 ++++++
 30 files changed, 332 insertions(+)
 create mode 100644 863/CH2/EX2.10/Ex2_10.sce
 create mode 100644 863/CH2/EX2.10/Ex2_10.txt
 create mode 100644 863/CH2/EX2.10/Result2_10.txt
 create mode 100644 863/CH2/EX2.11/Ex2_11.sce
 create mode 100644 863/CH2/EX2.11/Ex2_11.txt
 create mode 100644 863/CH2/EX2.11/Result2_11.txt
 create mode 100644 863/CH2/EX2.12/Ex2_12.sce
 create mode 100644 863/CH2/EX2.12/Ex2_12.txt
 create mode 100644 863/CH2/EX2.12/Result2_12.txt
 create mode 100644 863/CH2/EX2.3/Ex2_3.sce
 create mode 100644 863/CH2/EX2.3/Ex2_3.txt
 create mode 100644 863/CH2/EX2.3/Result2_3.txt
 create mode 100644 863/CH2/EX2.4/Ex2_4.sce
 create mode 100644 863/CH2/EX2.4/Ex2_4.txt
 create mode 100644 863/CH2/EX2.4/Result2_4.txt
 create mode 100644 863/CH2/EX2.5/Ex2_5.sce
 create mode 100644 863/CH2/EX2.5/Ex2_5.txt
 create mode 100644 863/CH2/EX2.5/Result2_5.txt
 create mode 100644 863/CH2/EX2.6/Ex2_6.sce
 create mode 100644 863/CH2/EX2.6/Ex2_6.txt
 create mode 100644 863/CH2/EX2.6/Result2_6.txt
 create mode 100644 863/CH2/EX2.7/Ex2_7.sce
 create mode 100644 863/CH2/EX2.7/Ex2_7.txt
 create mode 100644 863/CH2/EX2.7/Result2_7.txt
 create mode 100644 863/CH2/EX2.8/Ex2_8.sce
 create mode 100644 863/CH2/EX2.8/Ex2_8.txt
 create mode 100644 863/CH2/EX2.8/Result2_8.txt
 create mode 100644 863/CH2/EX2.9/Ex2_9.sce
 create mode 100644 863/CH2/EX2.9/Ex2_9.txt
 create mode 100644 863/CH2/EX2.9/Result2_9.txt

(limited to '863/CH2')

diff --git a/863/CH2/EX2.10/Ex2_10.sce b/863/CH2/EX2.10/Ex2_10.sce
new file mode 100644
index 000000000..f5e485bd7
--- /dev/null
+++ b/863/CH2/EX2.10/Ex2_10.sce
@@ -0,0 +1,16 @@
+//Caption:Calculate output voltage for (a)10V and 1ms Pw (b)10V and 2ms PW (c)20V and 1ms PW
+//Ex2.10
+clc;
+clear;
+close;
+e1=10//Voltage applied(in volts)
+e0=0//Voltage at t=0sec(in volts)
+t1=1//PW(in ms)
+t2=2//PW(in ms)
+e2=20//Input voltage(in volts)
+r=10//Resistance(in kilo ohm)
+c=20//Capacitance(in micro farad)
+eo1=(e1-((e1-e0)*(2.718)^(-t1/(r*c))))*1000
+eo2=(e1-((e1-e0)*(2.718)^(-t2/(r*c))))*1000
+eo3=(e2-((e2-e0)*(2.718)^(-t1/(r*c))))*1000
+disp(eo3,eo2,eo1,'Output voltage for(a)(in mv),(b)(in mv),(c)(in mv)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.10/Ex2_10.txt b/863/CH2/EX2.10/Ex2_10.txt
new file mode 100644
index 000000000..f5e485bd7
--- /dev/null
+++ b/863/CH2/EX2.10/Ex2_10.txt
@@ -0,0 +1,16 @@
+//Caption:Calculate output voltage for (a)10V and 1ms Pw (b)10V and 2ms PW (c)20V and 1ms PW
+//Ex2.10
+clc;
+clear;
+close;
+e1=10//Voltage applied(in volts)
+e0=0//Voltage at t=0sec(in volts)
+t1=1//PW(in ms)
+t2=2//PW(in ms)
+e2=20//Input voltage(in volts)
+r=10//Resistance(in kilo ohm)
+c=20//Capacitance(in micro farad)
+eo1=(e1-((e1-e0)*(2.718)^(-t1/(r*c))))*1000
+eo2=(e1-((e1-e0)*(2.718)^(-t2/(r*c))))*1000
+eo3=(e2-((e2-e0)*(2.718)^(-t1/(r*c))))*1000
+disp(eo3,eo2,eo1,'Output voltage for(a)(in mv),(b)(in mv),(c)(in mv)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.10/Result2_10.txt b/863/CH2/EX2.10/Result2_10.txt
new file mode 100644
index 000000000..7108796ca
--- /dev/null
+++ b/863/CH2/EX2.10/Result2_10.txt
@@ -0,0 +1,8 @@
+Output voltage for(a)(in mv),(b)(in mv),(c)(in mv)=   
+ 
+    49.87005  
+ 
+    99.491397  
+ 
+    99.740099  
+ 
\ No newline at end of file
diff --git a/863/CH2/EX2.11/Ex2_11.sce b/863/CH2/EX2.11/Ex2_11.sce
new file mode 100644
index 000000000..7818798be
--- /dev/null
+++ b/863/CH2/EX2.11/Ex2_11.sce
@@ -0,0 +1,16 @@
+//Caption:Calculate output voltage for (a)10V and (b)20V
+//Ex2.11
+clc;
+clear;
+close;
+E1=10//Input voltage(in volts)
+E2=20//Input voltage(in volts)
+c=1//Capacitance(in micro farad)
+r=1//Resistance(in kilo ohm)
+t=100//Pulse width(in ms)
+i1=(c*E1*10^(-6))/(t*10^(-3))
+eo1=i1*r*1000
+disp(eo1,'Output voltage for (a)(in volts)=')
+i2=(c*E2*10^(-6)/(t*10^(-3)))
+eo2=i2*r*1000
+disp(eo2,'Output voltage for (b)(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.11/Ex2_11.txt b/863/CH2/EX2.11/Ex2_11.txt
new file mode 100644
index 000000000..7818798be
--- /dev/null
+++ b/863/CH2/EX2.11/Ex2_11.txt
@@ -0,0 +1,16 @@
+//Caption:Calculate output voltage for (a)10V and (b)20V
+//Ex2.11
+clc;
+clear;
+close;
+E1=10//Input voltage(in volts)
+E2=20//Input voltage(in volts)
+c=1//Capacitance(in micro farad)
+r=1//Resistance(in kilo ohm)
+t=100//Pulse width(in ms)
+i1=(c*E1*10^(-6))/(t*10^(-3))
+eo1=i1*r*1000
+disp(eo1,'Output voltage for (a)(in volts)=')
+i2=(c*E2*10^(-6)/(t*10^(-3)))
+eo2=i2*r*1000
+disp(eo2,'Output voltage for (b)(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.11/Result2_11.txt b/863/CH2/EX2.11/Result2_11.txt
new file mode 100644
index 000000000..bcd5b862e
--- /dev/null
+++ b/863/CH2/EX2.11/Result2_11.txt
@@ -0,0 +1,8 @@
+Output voltage for (a)(in volts)=   
+ 
+    0.1  
+ 
+ Output voltage for (b)(in volts)=   
+ 
+    0.2  
+ 
\ No newline at end of file
diff --git a/863/CH2/EX2.12/Ex2_12.sce b/863/CH2/EX2.12/Ex2_12.sce
new file mode 100644
index 000000000..1150f0aae
--- /dev/null
+++ b/863/CH2/EX2.12/Ex2_12.sce
@@ -0,0 +1,15 @@
+//Caption:Calculate amplitude of output waveform for (a)Rise time (b)Fall time
+//Ex2.12
+clc;
+clear;
+close;
+r=1//Resistance(in kilo ohm)
+c=100//Capacitance(in pf)
+tr=1//Rise time(in micro sec)
+tf=3//Fall time(in micro sec)
+e1=8//Change in voltage for rise time(in volts)
+e2=-8//Change in voltage for fall time(in volts)
+eo1=r*c*0.001*e1/tr
+disp(eo1,'Amplitude of output waveform for (a)Rise time(in volts)=')
+eo2=r*c*0.001*e2/tf
+disp(eo2,'Amplitude of output waveform for (b)Fall time(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.12/Ex2_12.txt b/863/CH2/EX2.12/Ex2_12.txt
new file mode 100644
index 000000000..1150f0aae
--- /dev/null
+++ b/863/CH2/EX2.12/Ex2_12.txt
@@ -0,0 +1,15 @@
+//Caption:Calculate amplitude of output waveform for (a)Rise time (b)Fall time
+//Ex2.12
+clc;
+clear;
+close;
+r=1//Resistance(in kilo ohm)
+c=100//Capacitance(in pf)
+tr=1//Rise time(in micro sec)
+tf=3//Fall time(in micro sec)
+e1=8//Change in voltage for rise time(in volts)
+e2=-8//Change in voltage for fall time(in volts)
+eo1=r*c*0.001*e1/tr
+disp(eo1,'Amplitude of output waveform for (a)Rise time(in volts)=')
+eo2=r*c*0.001*e2/tf
+disp(eo2,'Amplitude of output waveform for (b)Fall time(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.12/Result2_12.txt b/863/CH2/EX2.12/Result2_12.txt
new file mode 100644
index 000000000..71233fcd8
--- /dev/null
+++ b/863/CH2/EX2.12/Result2_12.txt
@@ -0,0 +1,8 @@
+ Amplitude of output waveform for (a)Rise time(in volts)=   
+ 
+    0.8  
+ 
+ Amplitude of output waveform for (b)Fall time(in volts)=   
+ 
+  - 0.2666667  
+ 
\ No newline at end of file
diff --git a/863/CH2/EX2.3/Ex2_3.sce b/863/CH2/EX2.3/Ex2_3.sce
new file mode 100644
index 000000000..1ea9072ce
--- /dev/null
+++ b/863/CH2/EX2.3/Ex2_3.sce
@@ -0,0 +1,12 @@
+//Caption:Calculate voltage after 8ms
+//Ex:2.3
+clc;
+clear;
+close;
+c=1//Capacitance of capacitor(in micro farad)
+vs=6//Source voltage(in volts)
+r=10//Resistor(in kilo ohm)
+vi=-3//Initial voltage(in volts)
+t=8//Time (in milli sec)
+e=vs-((vs-vi)*2.718^(-t/(r*c)))
+disp(e,'Voltage after 8ms(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.3/Ex2_3.txt b/863/CH2/EX2.3/Ex2_3.txt
new file mode 100644
index 000000000..1ea9072ce
--- /dev/null
+++ b/863/CH2/EX2.3/Ex2_3.txt
@@ -0,0 +1,12 @@
+//Caption:Calculate voltage after 8ms
+//Ex:2.3
+clc;
+clear;
+close;
+c=1//Capacitance of capacitor(in micro farad)
+vs=6//Source voltage(in volts)
+r=10//Resistor(in kilo ohm)
+vi=-3//Initial voltage(in volts)
+t=8//Time (in milli sec)
+e=vs-((vs-vi)*2.718^(-t/(r*c)))
+disp(e,'Voltage after 8ms(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.3/Result2_3.txt b/863/CH2/EX2.3/Result2_3.txt
new file mode 100644
index 000000000..6ff6e1017
--- /dev/null
+++ b/863/CH2/EX2.3/Result2_3.txt
@@ -0,0 +1,3 @@
+Voltage after 8ms(in volts)=   
+ 
+    1.9557039  
\ No newline at end of file
diff --git a/863/CH2/EX2.4/Ex2_4.sce b/863/CH2/EX2.4/Ex2_4.sce
new file mode 100644
index 000000000..4129dae63
--- /dev/null
+++ b/863/CH2/EX2.4/Ex2_4.sce
@@ -0,0 +1,18 @@
+//Caption:Determine (a)Ec at 1.5ms (b)Ec at 6ms
+//Ex2.4
+clc;
+clear;
+close;
+r1=1//Resistor(in kilo ohm)
+c1=1//Capacitance(in micro farad)
+e1=10//Voltage(in volts)
+r2=20//Resistor(in kilo ohm)
+c2=0.1//Capacitance(in micro farad)
+e2=12//Voltage(in volts)
+t1=r1*c1*0.78
+e=e1*1
+ec1=e*t1
+t2=r2*c2*0.025
+E=e2*1
+ec2=E*t2
+disp(ec2,ec1,'(a)Ec at 1.5ms(in volts) and (b)Ec at 6ms(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.4/Ex2_4.txt b/863/CH2/EX2.4/Ex2_4.txt
new file mode 100644
index 000000000..4129dae63
--- /dev/null
+++ b/863/CH2/EX2.4/Ex2_4.txt
@@ -0,0 +1,18 @@
+//Caption:Determine (a)Ec at 1.5ms (b)Ec at 6ms
+//Ex2.4
+clc;
+clear;
+close;
+r1=1//Resistor(in kilo ohm)
+c1=1//Capacitance(in micro farad)
+e1=10//Voltage(in volts)
+r2=20//Resistor(in kilo ohm)
+c2=0.1//Capacitance(in micro farad)
+e2=12//Voltage(in volts)
+t1=r1*c1*0.78
+e=e1*1
+ec1=e*t1
+t2=r2*c2*0.025
+E=e2*1
+ec2=E*t2
+disp(ec2,ec1,'(a)Ec at 1.5ms(in volts) and (b)Ec at 6ms(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.4/Result2_4.txt b/863/CH2/EX2.4/Result2_4.txt
new file mode 100644
index 000000000..94b592ee3
--- /dev/null
+++ b/863/CH2/EX2.4/Result2_4.txt
@@ -0,0 +1,6 @@
+ (a)Ec at 1.5ms(in volts) and (b)Ec at 6ms(in volts)=   
+ 
+    7.8  
+ 
+    0.6  
+ 
\ No newline at end of file
diff --git a/863/CH2/EX2.5/Ex2_5.sce b/863/CH2/EX2.5/Ex2_5.sce
new file mode 100644
index 000000000..521d918e4
--- /dev/null
+++ b/863/CH2/EX2.5/Ex2_5.sce
@@ -0,0 +1,12 @@
+//Caption:Calculate Rise time,time for capacitor to charge to required amount and time required for complete charging
+//Ex2.5
+clc;
+clear;
+close;
+V=5//Voltage source(in volts)
+r=39//Resistor(in kilo ohm)
+c=500//Capacitance of capacitor(in pf)
+tr=2.2*r*c*10^(-3)
+t=r*c*10^(-3)
+tc=5*r*c*10^(-3)
+disp(tc,t,tr,'Rise time,time for  63.2% charging and time required for complete charging(in micro sec)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.5/Ex2_5.txt b/863/CH2/EX2.5/Ex2_5.txt
new file mode 100644
index 000000000..521d918e4
--- /dev/null
+++ b/863/CH2/EX2.5/Ex2_5.txt
@@ -0,0 +1,12 @@
+//Caption:Calculate Rise time,time for capacitor to charge to required amount and time required for complete charging
+//Ex2.5
+clc;
+clear;
+close;
+V=5//Voltage source(in volts)
+r=39//Resistor(in kilo ohm)
+c=500//Capacitance of capacitor(in pf)
+tr=2.2*r*c*10^(-3)
+t=r*c*10^(-3)
+tc=5*r*c*10^(-3)
+disp(tc,t,tr,'Rise time,time for  63.2% charging and time required for complete charging(in micro sec)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.5/Result2_5.txt b/863/CH2/EX2.5/Result2_5.txt
new file mode 100644
index 000000000..398cf308d
--- /dev/null
+++ b/863/CH2/EX2.5/Result2_5.txt
@@ -0,0 +1,8 @@
+Rise time,time for  63.2% charging and time required for complete charging(in micro sec)=   
+ 
+    42.9  
+ 
+    19.5  
+ 
+    97.5  
+ 
\ No newline at end of file
diff --git a/863/CH2/EX2.6/Ex2_6.sce b/863/CH2/EX2.6/Ex2_6.sce
new file mode 100644
index 000000000..f5895eb04
--- /dev/null
+++ b/863/CH2/EX2.6/Ex2_6.sce
@@ -0,0 +1,11 @@
+//Caption:Calculate minimum square wave frequency
+//Ex2.6
+clc;
+clear;
+close;
+C=1//Coupling capacitor(in micro farad)
+R=1//Input resistance(in Mega ohm)
+t=0.01//Tilt
+PW=t*R*C
+f=1/(2*PW)
+disp(f,'Frequency required(in hertz)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.6/Ex2_6.txt b/863/CH2/EX2.6/Ex2_6.txt
new file mode 100644
index 000000000..f5895eb04
--- /dev/null
+++ b/863/CH2/EX2.6/Ex2_6.txt
@@ -0,0 +1,11 @@
+//Caption:Calculate minimum square wave frequency
+//Ex2.6
+clc;
+clear;
+close;
+C=1//Coupling capacitor(in micro farad)
+R=1//Input resistance(in Mega ohm)
+t=0.01//Tilt
+PW=t*R*C
+f=1/(2*PW)
+disp(f,'Frequency required(in hertz)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.6/Result2_6.txt b/863/CH2/EX2.6/Result2_6.txt
new file mode 100644
index 000000000..d69045770
--- /dev/null
+++ b/863/CH2/EX2.6/Result2_6.txt
@@ -0,0 +1,3 @@
+Frequency required(in hertz)=   
+ 
+    50.  
\ No newline at end of file
diff --git a/863/CH2/EX2.7/Ex2_7.sce b/863/CH2/EX2.7/Ex2_7.sce
new file mode 100644
index 000000000..5d9635246
--- /dev/null
+++ b/863/CH2/EX2.7/Ex2_7.sce
@@ -0,0 +1,9 @@
+//Caption:Determine fastest rise time
+//Ex2.7
+clc;
+clear;
+close;
+r=600//Output resistance(in ohms)
+c=30//Input capacitance(in pf)
+tr=2.2*r*c*10^(-3)
+disp(tr,'Fastest rise time(in ns)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.7/Ex2_7.txt b/863/CH2/EX2.7/Ex2_7.txt
new file mode 100644
index 000000000..5d9635246
--- /dev/null
+++ b/863/CH2/EX2.7/Ex2_7.txt
@@ -0,0 +1,9 @@
+//Caption:Determine fastest rise time
+//Ex2.7
+clc;
+clear;
+close;
+r=600//Output resistance(in ohms)
+c=30//Input capacitance(in pf)
+tr=2.2*r*c*10^(-3)
+disp(tr,'Fastest rise time(in ns)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.7/Result2_7.txt b/863/CH2/EX2.7/Result2_7.txt
new file mode 100644
index 000000000..bc4ec653f
--- /dev/null
+++ b/863/CH2/EX2.7/Result2_7.txt
@@ -0,0 +1,4 @@
+Fastest rise time(in ns)=   
+ 
+    39.6  
+ 
\ No newline at end of file
diff --git a/863/CH2/EX2.8/Ex2_8.sce b/863/CH2/EX2.8/Ex2_8.sce
new file mode 100644
index 000000000..04f545276
--- /dev/null
+++ b/863/CH2/EX2.8/Ex2_8.sce
@@ -0,0 +1,16 @@
+//Caption:Calculate voltage at 14 ms 
+//Ex2.8
+clc;
+clear;
+close;
+Eo=0//Voltage at t=0sec(in volt)
+E=20//Peak voltage(in volts)
+r=3.3//Resistance(in kilo ohm)
+c=1//Capacitance(in micro farad)
+t1=4//Time(in ms)
+t2=2//Time(in ms)
+e1=E-((E-Eo)*(2.718)^(-t1/(r*c)))
+e2=Eo-((Eo-e1)*(2.718)^(-t1/(r*c)))
+e3=E-((E-e2)*(2.718)^(-t1/(r*c)))
+e3=Eo-((Eo-e3)*(2.718)^(-t2/(r*c)))
+disp(e3,'Voltage at 14ms(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.8/Ex2_8.txt b/863/CH2/EX2.8/Ex2_8.txt
new file mode 100644
index 000000000..04f545276
--- /dev/null
+++ b/863/CH2/EX2.8/Ex2_8.txt
@@ -0,0 +1,16 @@
+//Caption:Calculate voltage at 14 ms 
+//Ex2.8
+clc;
+clear;
+close;
+Eo=0//Voltage at t=0sec(in volt)
+E=20//Peak voltage(in volts)
+r=3.3//Resistance(in kilo ohm)
+c=1//Capacitance(in micro farad)
+t1=4//Time(in ms)
+t2=2//Time(in ms)
+e1=E-((E-Eo)*(2.718)^(-t1/(r*c)))
+e2=Eo-((Eo-e1)*(2.718)^(-t1/(r*c)))
+e3=E-((E-e2)*(2.718)^(-t1/(r*c)))
+e3=Eo-((Eo-e3)*(2.718)^(-t2/(r*c)))
+disp(e3,'Voltage at 14ms(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.8/Result2_8.txt b/863/CH2/EX2.8/Result2_8.txt
new file mode 100644
index 000000000..3612d0387
--- /dev/null
+++ b/863/CH2/EX2.8/Result2_8.txt
@@ -0,0 +1,4 @@
+ Voltage at 14ms(in volts)=   
+ 
+    8.3423155  
+ 
\ No newline at end of file
diff --git a/863/CH2/EX2.9/Ex2_9.sce b/863/CH2/EX2.9/Ex2_9.sce
new file mode 100644
index 000000000..44d5c973b
--- /dev/null
+++ b/863/CH2/EX2.9/Ex2_9.sce
@@ -0,0 +1,12 @@
+//Caption:Determine max and min voltage at which capacitor voltage will settle
+//Ex2.9
+clc;
+clear;
+close;
+E=20//Peak voltage(in volts)
+t=4//Time interval(in ms)
+r=3.3//Resistance(in kilo ohms)
+c=1//Capacitance(in micro farad)
+Emax=E/(1+(2.718^(-t/(r*c))))
+Emin=E-Emax
+disp(Emin,Emax,'Maximum and minimum voltage(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.9/Ex2_9.txt b/863/CH2/EX2.9/Ex2_9.txt
new file mode 100644
index 000000000..44d5c973b
--- /dev/null
+++ b/863/CH2/EX2.9/Ex2_9.txt
@@ -0,0 +1,12 @@
+//Caption:Determine max and min voltage at which capacitor voltage will settle
+//Ex2.9
+clc;
+clear;
+close;
+E=20//Peak voltage(in volts)
+t=4//Time interval(in ms)
+r=3.3//Resistance(in kilo ohms)
+c=1//Capacitance(in micro farad)
+Emax=E/(1+(2.718^(-t/(r*c))))
+Emin=E-Emax
+disp(Emin,Emax,'Maximum and minimum voltage(in volts)=')
\ No newline at end of file
diff --git a/863/CH2/EX2.9/Result2_9.txt b/863/CH2/EX2.9/Result2_9.txt
new file mode 100644
index 000000000..a24c66419
--- /dev/null
+++ b/863/CH2/EX2.9/Result2_9.txt
@@ -0,0 +1,6 @@
+ Maximum and minimum voltage(in volts)=   
+ 
+    15.413037  
+ 
+    4.5869631  
+ 
\ No newline at end of file
-- 
cgit