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

---
 3754/CH31/EX31.18/31_18.sce | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 3754/CH31/EX31.18/31_18.sce

(limited to '3754/CH31/EX31.18')

diff --git a/3754/CH31/EX31.18/31_18.sce b/3754/CH31/EX31.18/31_18.sce
new file mode 100644
index 000000000..5c18c0490
--- /dev/null
+++ b/3754/CH31/EX31.18/31_18.sce
@@ -0,0 +1,21 @@
+clear//
+
+//Variables
+
+fo = 2.0 * 10**3                                //Frequency (in Hertz)
+hie = 2.0 * 10**3                               //hie (in ohm)
+R1 = 20.0 * 10**3                               //Resistance (in ohm)
+R2 = 80.0 * 10**3                               //Resistance (in ohm)
+RC = 10.0 * 10**3                               //Collector Resistance (in ohm)
+R = 8.0 * 10**3                                 //Resistance (in ohm)
+
+//Calculation
+
+C = 1/(2*%pi*R)*(1/(6 + 4*RC/R)**0.5)/fo    //Capacitance (in Farad)
+hfe = 23 + 29 * R/RC + 4* RC /R                 //Current gain 
+Ri = (1/R1 + 1/R2 + 1/hie)**-1                  //Input resistance (in ohm)
+R3 = R - Ri                                     //Feedback resitor (in ohm)
+
+//Result
+
+printf("\n Value of capacaitor C is  %0.3f  micro-Farad.\nValue of transistor gain is hfe >=  %0.3f .\nValue of feedback resistor R3 is  %0.1f  kilo-ohm.",C*10**6,hfe,R3*10**-3)
-- 
cgit