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

---
 2459/CH14/EX14.14/Ex14_14.sce | 44 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 2459/CH14/EX14.14/Ex14_14.sce

(limited to '2459/CH14/EX14.14/Ex14_14.sce')

diff --git a/2459/CH14/EX14.14/Ex14_14.sce b/2459/CH14/EX14.14/Ex14_14.sce
new file mode 100644
index 000000000..9a4d0451a
--- /dev/null
+++ b/2459/CH14/EX14.14/Ex14_14.sce
@@ -0,0 +1,44 @@
+// chapter14
+// example14.14
+// page 308
+
+Vcc=15 // V
+R1=22 // kilo ohm
+R2=3.3 // kilo ohm
+R3=5 // kilo ohm
+R4=1 // kilo ohm
+R5=15 // kilo ohm
+R6=2.5 // kilo ohm
+R8=1 // kilo ohm
+R3=5 // kilo ohm
+R7=5 // kilo ohm
+Rl=10 // kilo ohm
+gain_beta=200
+Vbe=0.7 // V
+
+// for second stage
+V_R6=Vcc*R6/(R6+R5)
+V_R8=V_R6-Vbe
+I_E2=V_R8/R8 // emitter current in R8
+re_dash2=25d-3/I_E2
+Zin_base=gain_beta*re_dash2
+Zin=R5*(R6*Zin_base/(R6+Zin_base))/(R5+(R6*Zin_base/(R6+Zin_base)))
+R_AC2=R7*Rl/(R7+Rl)
+Av2=R_AC2/re_dash2
+
+// for first stage
+V_R2=Vcc*R2/(R2+R1)
+V_R4=V_R2-Vbe
+I_E1=V_R4/R4 // emitter current in R4
+re_dash1=25d-3/I_E1
+R_AC1=R3*Zin/(R3+Zin)
+Av1=R_AC1/re_dash1
+
+Av=Av1*Av2
+
+printf("voltage gain of first stage = %.3f \n",Av1)
+printf("voltage gain of second stage = %.3f \n",Av2)
+printf("overall voltage gain= %.3f \n",Av)
+
+// the accurate answers are voltage gain of first stage = 52.616, voltage gain of second stage = 192.381, overall voltage gain= 10122.329. In book the answers are 53,191.4 and 10144 
+// respectively
-- 
cgit