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Diffstat (limited to '1514/CH3/EX3.7/3_7.sce')
| -rwxr-xr-x | 1514/CH3/EX3.7/3_7.sce | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/1514/CH3/EX3.7/3_7.sce b/1514/CH3/EX3.7/3_7.sce new file mode 100755 index 000000000..bfe4db4cf --- /dev/null +++ b/1514/CH3/EX3.7/3_7.sce @@ -0,0 +1,22 @@ +//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);
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