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10 files changed, 153 insertions, 0 deletions

diff --git a/2534/CH10/EX10.1/Ex10_1.sce b/2534/CH10/EX10.1/Ex10_1.sce
new file mode 100755
index 000000000..00496373a
--- /dev/null
+++ b/2534/CH10/EX10.1/Ex10_1.sce
@@ -0,0 +1,8 @@
+//Ex10_1

+clc

+Av = 80//voltage gain

+beta = 0.001//feedback ratio

+disp("Av = "+string(Av))

+disp("beta = "+string(beta))

+Avf = Av/(1+beta*Av)//gain with negative feedback

+disp("Avf = Av/(1+beta*Av) = "+string(Avf))

diff --git a/2534/CH10/EX10.10/Ex10_10.sce b/2534/CH10/EX10.10/Ex10_10.sce
new file mode 100755
index 000000000..f59638232
--- /dev/null
+++ b/2534/CH10/EX10.10/Ex10_10.sce
@@ -0,0 +1,18 @@
+//Ex10_10

+clc

+//parameters of emitter follower circuit:

+hie = 1.1*10^3//input resistance

+hfe = 80//current gain

+hoe = 2*10^-5//output conductance

+Re = 2.2*10^3//emitter resistance

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

+disp("hfe = "+string(hfe))

+disp("hoe = "+string(hoe)+"mho")

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

+gm = hfe/hie

+Rif = hie*(1+gm*Re)//input resistance with feedback

+disp("Rif = hie*(1+gm*Re) = "+string(Rif)+"ohm")

+Rof = hie/(1+hfe)//output resistance with feedback

+disp("Rof = hie/(1+hfe) = "+string(Rof)+"ohm")

+Avf = gm*Re/(1+gm*Re)//voltage gain with negative feedback

+disp("Avf = gm*Re/(1+gm*Re) = "+string(Avf))

diff --git a/2534/CH10/EX10.2/Ex10_2.sce b/2534/CH10/EX10.2/Ex10_2.sce
new file mode 100755
index 000000000..d0e014044
--- /dev/null
+++ b/2534/CH10/EX10.2/Ex10_2.sce
@@ -0,0 +1,16 @@
+//Ex10_2

+clc

+Av = 50//voltage gain

+beta = 0.01//feedback ratio

+BW = 100*10^3//bandwidth

+disp("Av = "+string(Av))

+disp("beta = "+string(beta))

+disp("Bandwidth = "+string(BW)+"Hz")

+Avf = Av/(1+beta*Av)//gain with negative feedback

+disp("Avf = Av/(1+beta*Av) = "+string(Avf))

+BWf = BW*(1+beta*Av)//bandwidth with negative feedback

+disp("(B.W)f = "+string(BWf)+"Hz")

+

+

+// note : using variable "BW" instad of "B.W" ... as, if using B.W the software takes it as a function.

+// similarly using "BWf" instead of (B.W)f.

diff --git a/2534/CH10/EX10.3/Ex10_3.sce b/2534/CH10/EX10.3/Ex10_3.sce
new file mode 100755
index 000000000..d702d97e5
--- /dev/null
+++ b/2534/CH10/EX10.3/Ex10_3.sce
@@ -0,0 +1,11 @@
+//Ex10_3

+clc

+Av = 200// voltage gain

+D = 0.05// harmonic distortion in amplifier

+Df = 0.02//final reduced distortion

+beta = (D/Df-1)/Av//feedback gain

+disp("Av = "+string(Av))

+disp("D = "+string(D))

+disp("Df = "+string(Df))

+disp("beta = (D/Df - 1)/Av = "+string(beta))

+disp("beta = "+string(beta*100)+"%")

diff --git a/2534/CH10/EX10.4/Ex10_4.sce b/2534/CH10/EX10.4/Ex10_4.sce
new file mode 100755
index 000000000..1af98a93a
--- /dev/null
+++ b/2534/CH10/EX10.4/Ex10_4.sce
@@ -0,0 +1,20 @@
+//Ex10_4

+clc

+Av1 = 100//initial voltage gain

+beta = 0.001//feedback ratio

+disp("Av1 = "+string(Av1))

+disp("beta = "+string(beta))

+Af1 = Av1/(1+beta*Av1)//initial gain with negative feedback

+disp("Af1 = Av1/(1+beta*Av1) = "+string(Af1))

+

+Av2 = 150//final voltage gain

+beta = 0.001//feedback ratio

+disp("Av2 = "+string(Av2))

+disp("beta = "+string(beta))

+Af2 = Av2/(1+beta*Av2)//final gain with negative feedback

+disp("Af2 = Av2/(1+beta*Av2) = "+string(Af2))

+

+change_in_gain = Af2 - Af1//required change in gain

+disp("change in gain required = Af2 - Af1 = "+string(change_in_gain))

+delta_Avf = change_in_gain/Af1

+disp("delta_Avf = Af2-Af1/Af1 = "+string(delta_Avf)+"%")

diff --git a/2534/CH10/EX10.5/Ex10_5.sce b/2534/CH10/EX10.5/Ex10_5.sce
new file mode 100755
index 000000000..04e9c94fc
--- /dev/null
+++ b/2534/CH10/EX10.5/Ex10_5.sce
@@ -0,0 +1,16 @@
+//Ex10_5

+clc

+Av = 40//voltage gain in decibles

+disp("Av = "+string(Av)+"dB")

+Av = 10^(Av/20)//voltage gain in V/V

+disp("Av = "+string(Av))

+Avf = 20//voltage gain with negative feedback in decibles

+disp("Avf = "+string(Avf)+"dB")

+Avf = 10^(Avf/20)//voltage gain with negative feedback in V/V

+disp("Avf = "+string(Avf))

+beta = ((Av/Avf)-1)/Av//feedback ratio

+disp("beta = (Av/Avf - 1)/Av = "+string(beta))

+

+

+

+// note: solution in the textbook for the above problem is wrong.

diff --git a/2534/CH10/EX10.6/Ex10_6.sce b/2534/CH10/EX10.6/Ex10_6.sce
new file mode 100755
index 000000000..8d7d7e057
--- /dev/null
+++ b/2534/CH10/EX10.6/Ex10_6.sce
@@ -0,0 +1,16 @@
+//Ex10_6

+clc

+Av = 100//voltage gain

+beta = 0.05//feedback ratio

+BW = 400*10^3 //bandwidth

+disp("Av = "+string(Av))

+disp("beta = "+string(beta))

+disp("B.W. = "+string(BW)+"Hz")

+Af = Av/(1+beta*Av)//gain with negative feedback

+disp("Af = Av/(1+beta*Av) = "+string(Af))

+BWf = BW*(1+beta*Av)//bandwidth with negative feedback

+disp("(B.W)f = "+string(BWf)+"Hz")

+

+

+// note : using variable "BW" instad of "B.W" ... as, if using B.W the software takes it as a function.

+// similarly using "BWf" instead of (B.W)f.

diff --git a/2534/CH10/EX10.7/Ex10_7.sce b/2534/CH10/EX10.7/Ex10_7.sce
new file mode 100755
index 000000000..7e0e2834c
--- /dev/null
+++ b/2534/CH10/EX10.7/Ex10_7.sce
@@ -0,0 +1,18 @@
+//Ex10_7

+clc

+Po = 100//output power

+RL = 10//load resistance

+disp("Po = "+string(Po)+"W")

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

+vo = (RL*Po)^0.5//output voltage

+vi = 2//input voltage

+disp("vo = (Rl*Po)^0.5 = "+string(vo)+"V")

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

+Av = vo/vi//voltage gain

+disp("Av = vo/vi = "+string(Av))

+D = 0.04// harmonic distortion in amplifier

+Df = 0.0002//distortion after feedback

+beta = (D/Df-1)/Av//feedback gain

+disp("D = "+string(D))

+disp("Df = "+string(Df))

+disp("beta = (D/Df - 1)/Av = "+string(beta))

diff --git a/2534/CH10/EX10.8/Ex10_8.sce b/2534/CH10/EX10.8/Ex10_8.sce
new file mode 100755
index 000000000..4186357d3
--- /dev/null
+++ b/2534/CH10/EX10.8/Ex10_8.sce
@@ -0,0 +1,14 @@
+//Ex10_8

+clc

+BW = 500*10^3//bandwidth

+A = 200//gain of amplifier

+BWf = 2*10^6//bandwidth with negative feedback

+disp("B.W = "+string(BW)+"HZ")

+disp("A = "+string(A))

+disp("(B.W)f = "+string(BWf)+"Hz")

+beta = ((BWf/BW)-1)/A//feedback ratio

+disp("beta = ((B.W)f/B.W - 1)/A = "+string(beta))

+disp("beta = "+string(beta*100)+"%")

+

+// note : using variable "BW" instad of "B.W" ... as, if using B.W the software takes it as a function.

+// similarly using "BWf" instead of (B.W)f.

diff --git a/2534/CH10/EX10.9/Ex10_9.sce b/2534/CH10/EX10.9/Ex10_9.sce
new file mode 100755
index 000000000..cb4e408d9
--- /dev/null
+++ b/2534/CH10/EX10.9/Ex10_9.sce
@@ -0,0 +1,16 @@
+//Ex10_9

+clc

+A = 150//gain of amplifier

+beta = 0.05//feedback ratio

+disp("A = "+string(A))

+disp("beta = "+string(beta))

+Af = A/(1+beta*A)//gain with negative feedback

+disp("Af = A/(1+beta*A) = "+string(Af))

+fL = 20*10^3//lower 3dB frequency

+fU = 160*10^3//upper 3dB frequency

+disp("fL = "+string(fL)+"Hz")

+disp("fU = "+string(fU)+"Hz")

+fLf = fL/(1+beta*A)//lower 3dB gain with negative feedback

+disp("fLf = fL/(1+beta*A) = "+string(fLf)+"Hz")

+fUf = fU*(1+beta*A)//upper 3dB gain with negative feedback

+disp("fUf = fU*(1+beta*A) = "+string(fUf)+"Hz")