diff options
Diffstat (limited to '3754/CH25/EX25.5/25_5.sce')
| -rw-r--r-- | 3754/CH25/EX25.5/25_5.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/3754/CH25/EX25.5/25_5.sce b/3754/CH25/EX25.5/25_5.sce new file mode 100644 index 000000000..43bbf300c --- /dev/null +++ b/3754/CH25/EX25.5/25_5.sce @@ -0,0 +1,26 @@ +clear//
+
+//Variables
+
+hie = 1.1 * 10**3 //hie (in ohm)
+hre = 2.5 * 10**-4 //hre
+hoe = 25.0 * 10**-6 //hoe (in mho)
+RS = 10000.0 //Source resistance (in ohm)
+hfe=50.0;beta=50.0;
+rL = 1000.0 //ac.c load resistance (in ohm)
+RB = 200.0 * 10**3 //Feedback resistor (in ohm)
+RC = 5.0 * 10**3 //Collector resistance (in ohm)
+
+//Calculation
+
+rL = RC * RB / (RC + RB) //a.c. load resistance (in ohm)
+Ai = hfe /(1 + hoe * rL) //Current gain
+Ri = hie + hre * Ai * rL //Input resistance of the amplifier looking into the base (in ohm)
+Av = Ai * rL / Ri //Voltage gain
+RB1 = RB/(1 - (-17.4)) //Resistance (in ohm)
+Ris = Ri * RB1 / (Ri + RB1) //Input resistance looking from source terminals (in ohm)
+Avs = Av * Ris / (RS + Ris) //Voltage gain of the stage
+
+//Result
+
+printf("\n Ai is %0.2f \nAv is %0.2f \nAvs is %0.1f \nRi is %0.3f kilo-ohm.",Ai,Av,Avs,Ri*10**-3)
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