initial commit / add all books

13 files changed, 219 insertions, 0 deletions

diff --git a/2534/CH6/EX6.1/Ex6_1.sce b/2534/CH6/EX6.1/Ex6_1.sce
new file mode 100755
index 000000000..8d78fb951
--- /dev/null
+++ b/2534/CH6/EX6.1/Ex6_1.sce
@@ -0,0 +1,10 @@
+//Ex6_1

+clc

+IB = 40*10^-6

+IC = 3*10^-3

+beta = IC/IB

+alpha = beta/(1+beta)

+disp("IB = "+string(IB)+"A")//base current 

+disp("IC = "+string(IC)+"A")//collector current

+disp("beta = IC/IB = "+string(beta))//current gain in CE configuration

+disp("alpha = beta/(1+beta) = "+string(alpha))//current gain in CB configuration

diff --git a/2534/CH6/EX6.10/Ex6_10.sce b/2534/CH6/EX6.10/Ex6_10.sce
new file mode 100755
index 000000000..8a91fdd92
--- /dev/null
+++ b/2534/CH6/EX6.10/Ex6_10.sce
@@ -0,0 +1,8 @@
+//Ex6_10

+clc

+ic = 2.5*10^-3

+ib = 50*10^-6

+disp("ib = "+string(ib)+"A")//base current

+disp("ic = "+string(ic)+"A")//collector current

+beta = ic/ib

+disp("beta = ic/ib = "+string(beta))//current gain 

diff --git a/2534/CH6/EX6.11/Ex6_11.sce b/2534/CH6/EX6.11/Ex6_11.sce
new file mode 100755
index 000000000..23072032c
--- /dev/null
+++ b/2534/CH6/EX6.11/Ex6_11.sce
@@ -0,0 +1,8 @@
+//Ex6_11

+clc

+ic = 3*10^-3

+ib = 3.08*10^-3

+disp("ib = "+string(ib)+"A")//base current

+disp("ic = "+string(ic)+"A")//collector current

+alpha = ic/ib

+disp("alpha = ie/ib = ic/ib = "+string(alpha))//current gain, assuming ie = ic 

diff --git a/2534/CH6/EX6.12/Ex6_12.sce b/2534/CH6/EX6.12/Ex6_12.sce
new file mode 100755
index 000000000..49bf49bef
--- /dev/null
+++ b/2534/CH6/EX6.12/Ex6_12.sce
@@ -0,0 +1,10 @@
+//Ex6_12

+clc

+//given, collector voltage swings between 11V to 4V

+//thus,

+vc = 11-4

+disp("vc = 11 - 4 = "+string(vc)+"V")//PEAK-to-PEAK collector voltage

+//given, collector current swings between 5mA to 1.4mA

+//thus,

+ic = (5 - 1.4)*10^-3

+disp("ic = 5m - 1.4m = "+string(ic)+"A")//PEAK-to-PEAK collector current

diff --git a/2534/CH6/EX6.13/Ex6_13.sce b/2534/CH6/EX6.13/Ex6_13.sce
new file mode 100755
index 000000000..41d26317d
--- /dev/null
+++ b/2534/CH6/EX6.13/Ex6_13.sce
@@ -0,0 +1,8 @@
+//Ex6_13

+clc

+ic = 4*10^-3

+ib = 80*10^-6

+disp("ib = "+string(ib)+"A")//base current

+disp("ic = "+string(ic)+"A")//collector current

+Ai = ic/ib

+disp("Ai = ic/ib = "+string(Ai))//current gain in CE amplifier

diff --git a/2534/CH6/EX6.2/Ex6_2.sce b/2534/CH6/EX6.2/Ex6_2.sce
new file mode 100755
index 000000000..25852e268
--- /dev/null
+++ b/2534/CH6/EX6.2/Ex6_2.sce
@@ -0,0 +1,12 @@
+//Ex6_2

+clc

+IE = 1.2*10^-3

+beta = 60

+alpha = beta/(1+beta)

+disp("beta = "+string(beta))//current gain in CE configuration

+disp("alpha = beta/(1+beta) = "+string(alpha))//current gain in CB configuraion

+disp("IE = "+string(IE)+"A")//emitter current

+IB = IE/(beta+1)

+IC = beta*IB

+disp("IB = IE/(beta+1) = "+string(IB)+"A")//base current

+disp("IC = beta*IB = "+string(IC)+"A")//collector current

diff --git a/2534/CH6/EX6.3/Ex6_3.sce b/2534/CH6/EX6.3/Ex6_3.sce
new file mode 100755
index 000000000..dba690745
--- /dev/null
+++ b/2534/CH6/EX6.3/Ex6_3.sce
@@ -0,0 +1,32 @@
+//Ex6_3

+clc

+alpha = 0.98

+VBE = 0.7

+IE = -2*10^-3

+Re = 100

+RL = 3.3*10^3

+disp("alpha = "+string(alpha))//current gain

+disp("VBE = "+string(VBE)+"V")//voltage across base-emitter

+disp("IE = "+string(IE)+"A")//emitter current

+disp("Re = "+string(Re)+"ohm")//emitter resistance

+disp("RL = "+string(RL)+"ohm")//load resistance

+//now according to circuit given for the question in the textbook

+IC = -alpha * IE

+disp("IC = -alpha*IE = "+string(IC)+"A")//collector current

+IB = -IC - IE

+disp("IB = -IC - IE = "+string(IB)+"A")//base current

+VBN = VBE+(abs(IE)*Re)

+disp("VBN = VBE+(IE*Re) = "+string(VBN)+"V")//voltage across base and ground(N)

+//ASSUMING... value for R1 = 30*10^3 ohm

+R1 = 30*10^3

+disp("R1 = "+string(R1)+"ohm")//resistancfe R1 as given in circuit

+I = VBN/R1

+disp("I = VBN/R1 = "+string(I)+"A")//current across resistance R1

+//ASSUMING... VCC = 9V

+VCC = 9//collector voltage

+disp("VCC = "+string(VCC)+"V")

+VCN = VCC - (RL*(IC+I+IB))

+disp("VCN = VCC - RL*(IC+I+IB)) = "+string(VCN)+"V")//voltage across collector and ground(N)

+// according to the given diagram for the question in the textbook, unknown resistance is,

+R = (VCN - VBN)/(I+IB)

+disp("R = (VCN - VBN)/(I+IB) = "+string(R)+"ohm")//unknown resistance

diff --git a/2534/CH6/EX6.4/Ex6_4.sce b/2534/CH6/EX6.4/Ex6_4.sce
new file mode 100755
index 000000000..28fc9bc2d
--- /dev/null
+++ b/2534/CH6/EX6.4/Ex6_4.sce
@@ -0,0 +1,22 @@
+//Ex6_4

+clc

+RC = 2.3*10^3

+Re = 1*10^3

+VCC = 12

+VCE = 5

+VBE = 0.7

+beta = 50

+disp("RC = "+string(RC)+"ohm")//collector resistance

+disp("Re = "+string(Re)+"ohm")//emitter resistance

+disp("VCC = "+string(VCC)+"V")//supply voltage

+disp("VCE = "+string(VCE)+"V")//voltage across collector and emitter

+disp("VBE = "+string(VBE)+"V")//voltage across base and emitter

+disp("beta = "+string(beta))//current gain

+// according to the given circuit, we have

+IB = (VCC - VCE)/((beta+1)*[RC+Re])

+disp("IB = (VCC - VCE)/((beta+1)*[RC+Re]) = "+string(IB)+"A")//base current

+IC = beta*IB

+disp("IC = "+string(IC)+"A")//collector current

+//from the circuit we have,

+Rt = (VCE-VBE)/IB

+disp("Rt = (VCE - VBE)/IB = "+string(Rt)+"ohm")//resistance Rt as given in circuit

diff --git a/2534/CH6/EX6.5/Ex6_5.sce b/2534/CH6/EX6.5/Ex6_5.sce
new file mode 100755
index 000000000..fa46b80c9
--- /dev/null
+++ b/2534/CH6/EX6.5/Ex6_5.sce
@@ -0,0 +1,18 @@
+//Ex6_5

+clc

+VBB = 1

+VCC = 12

+IC = 12*10^-3

+VCE = 4

+beta = 80

+VBE = 0.7

+disp("VBB = "+string(VBB)+"V")//base supply voltage

+disp("VCC = "+string(VCC)+"V")//collector supply voltage

+disp("IC = "+string(IC)+"A")//collector current

+disp("VCE = "+string(VCE)+"V")//voltage across collector and emitter

+disp("beta = "+string(beta))//current gain

+disp("VBE = "+string(VBE)+"V")//voltage across base and emitter

+IB = IC/beta

+disp("IB = IC/beta = "+string(IB)+"A")//base current

+RC = (VCC - VCE)/IC

+disp("RC = (VCC - VCE)/IC = "+string(int(RC))+"ohm")//collector resistance

diff --git a/2534/CH6/EX6.6/Ex6_6.sce b/2534/CH6/EX6.6/Ex6_6.sce
new file mode 100755
index 000000000..0f57448ec
--- /dev/null
+++ b/2534/CH6/EX6.6/Ex6_6.sce
@@ -0,0 +1,22 @@
+//Ex6_6

+clc

+VCC = 9

+VBB = 3

+IC = 2*10^-3

+beta = 50

+VBE = 0.7

+VCE = 4

+disp("VCC = "+string(VCC)+"V")//collector supply voltage

+disp("VBB = "+string(VBB)+"V")//base supply voltage

+disp("IC = "+string(IC)+"A")//collector current

+disp("beta = "+string(beta))//current gain

+disp("VBE = "+string(VBE)+"V")//voltage across base and emitter

+disp("VCE = "+string(VCE)+"V")//voltage across collector and emitter

+IB = IC/beta

+disp("IB = IC/beta = "+string(IB)+"A")//base current

+RB = (VBB - VBE)/IB

+disp("RB = (VBB - VBE)/IB = "+string(RB)+"ohm")//base resistance according to the given in circuit

+

+

+// note: misprint in the question, author is asking for IB instead of beta, as beta is already provided.

+// note: calculation done in the textbook for the problem is wrong.

diff --git a/2534/CH6/EX6.7/Ex6_7.sce b/2534/CH6/EX6.7/Ex6_7.sce
new file mode 100755
index 000000000..c7e6b54b6
--- /dev/null
+++ b/2534/CH6/EX6.7/Ex6_7.sce
@@ -0,0 +1,32 @@
+//Ex6_7

+clc

+VCC = 12

+VBB = 3

+IC = 12*10^-3

+VCE = 5.5

+beta = 100

+VBE = 0.7

+Re = 50

+disp("VCC = "+string(VCC)+"V")//collector supply voltage

+disp("VBB = "+string(VBB)+"V")//base supply voltage

+disp("IC = "+string(IC)+"A")//collector current

+disp("VCE = "+string(VCE)+"V")//voltage across collector and emitter

+disp("beta = "+string(beta))//current gain

+disp("VBE = "+string(VBE)+"V")//voltage across base and emitter

+disp("Re = "+string(Re)+"ohm")//emittter resistance

+IB = IC/beta

+disp("IB = IC/beta = "+string(IB)+"A")//base current

+//from base-emitter circuit;

+IE = IC+IB

+Rb = (VBB - VBE - (IE*Re))/IB

+disp("Rb = (VBB - VBE - IE*Re)/IB = "+string(Rb)+"ohm")//base resistance

+//from collector-emitter circuit, we have

+Rc = (VCC - VCE - (IE*Re))/(IC)

+disp("Rc = (VCC - VCE - (IE*Re))/IC = "+string(Rc)+"ohm")//collector resistance

+

+

+//NOTE : in textbook the notation used for base and emitter resistance in fig. and in calculation are different

+

+

+

+// note : calculation perform in the textbook is wrong for the above problem

diff --git a/2534/CH6/EX6.8/Ex6_8.sce b/2534/CH6/EX6.8/Ex6_8.sce
new file mode 100755
index 000000000..ba3cfcb2d
--- /dev/null
+++ b/2534/CH6/EX6.8/Ex6_8.sce
@@ -0,0 +1,21 @@
+//Ex6_8

+clc

+VBB = 10

+RB = 500*10^3

+VCC = 15

+RC = 1.2*10^3

+beta =100

+disp("beta = "+string(beta))//current gain

+disp("VBB = "+string(VBB)+"V")//base supply voltage

+disp("RB = "+string(RB)+"ohm")//resistance across base terminal

+disp("VCC = "+string(VCC)+"V")//collector supply voltage

+disp("RC = "+string(RC)+"ohm")//resistance across collector terminal

+IB = VBB/RB

+disp("IB = VBB/RB = "+string(IB)+"A")//base current

+IC = beta*IB

+disp("IC = beta*IB = "+string(IC)+"A")//collector current

+VCE = VCC - (IC*RC)

+disp("VCE = VCC - IC*RC = "+string(VCE)+"V")//voltage across collector and emitter

+

+

+// the answer printed in the textbook for VCE is wrong.

diff --git a/2534/CH6/EX6.9/Ex6_9.sce b/2534/CH6/EX6.9/Ex6_9.sce
new file mode 100755
index 000000000..a83edeb06
--- /dev/null
+++ b/2534/CH6/EX6.9/Ex6_9.sce
@@ -0,0 +1,16 @@
+//Ex6_9

+clc

+ic = 2*10^-3

+ie = ic// as base current is negligble

+VT = 25*10^-3

+re = VT/ie

+gm = ie/VT

+disp("ic = "+string(ic)+"A")//collector current

+disp("ie = "+string(ie)+"A")//emitter current with negligble base current

+disp("VT = "+string(VT)+"V")//voltage at room temperature

+disp("re = VT/ie = "+string(re)+"ohm")//emitter resistance

+disp("gm = ie/VT = "+string(gm)+"mho")//conductance

+rc = 100*10^3//slope of output characteristics

+disp("rc = "+string(rc)+"ohm")

+hoe = 1/rc

+disp("hoe = 1/rc = "+string(hoe)+"Mho")//output conductance