blob: bfe4db4cfcdc1c4378ddb66cc4d1a4765b72c6c1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
//chapter 3
//example 3.7
//page 92
//to find values of h parameters (hie,hre)for common emitter configuration
clear all;
clc ;
//given
Ib=60; //base current in microA
Vce=4.5; //collctor to emitter voltage in volts
//from input characteristics from point C
deltaVbe=0.15; //change in base to emitter voltage
deltaIb=120/10^6; //change in base current
hie=(deltaVbe/deltaIb)/1000; //input resistance
//from input characteristics from point D
deltaVbe=0.01;
deltaVce=5; //change in collctor to emitter voltage
hre=1000*deltaVbe/deltaVce; //reverse voltage transfe ratio
printf('\ninput resistance:\nhie=%.2f Kohm\nreverse voltage transfer ratio:\nhre=%dx(10^-3)',hie,hre);
|
