summaryrefslogtreecommitdiff
path: root/3682/CH2/EX2.9/Ex2_9.sce
diff options
context:
space:
mode:
Diffstat (limited to '3682/CH2/EX2.9/Ex2_9.sce')
-rw-r--r--3682/CH2/EX2.9/Ex2_9.sce25
1 files changed, 25 insertions, 0 deletions
diff --git a/3682/CH2/EX2.9/Ex2_9.sce b/3682/CH2/EX2.9/Ex2_9.sce
new file mode 100644
index 000000000..49d1abc37
--- /dev/null
+++ b/3682/CH2/EX2.9/Ex2_9.sce
@@ -0,0 +1,25 @@
+// Exa 2.9
+
+clc;
+clear;
+
+// Given data
+
+// A differential amplifier with single ended output
+// Referring circuit given in Fig. 2.9
+Bo = 100; // current gain
+Re = 150; // Ω
+Rc = 10*10^3; // Ω
+IQ = 0.5*10^-3; // mA
+VT = 25*10^-3; // mV
+
+// Solution
+
+ICQ = IQ/2;
+gm = ICQ/VT; // in ʊ
+r_pi = Bo/gm;
+
+printf(' The differential mode gain for a single stage is found from the equivalent circuit shown in fig.(ii)\n on page no. 64 and is equal to ');
+ADM = (1/2)*(Bo*Rc/(r_pi+(1+Bo)*Re));
+printf(' %d V/V. \n',round(ADM));
+printf(' \n We can see that sign of ADM is positive because the output is taken at the collector of Q2\n whereas input is applied at the base of Q1. \n');