initial commit / add all books

1 files changed, 30 insertions, 0 deletions

diff --git a/3754/CH24/EX24.6/24_6.sce b/3754/CH24/EX24.6/24_6.sce
new file mode 100644
index 000000000..558986122
--- /dev/null
+++ b/3754/CH24/EX24.6/24_6.sce
@@ -0,0 +1,30 @@
+clear//

+

+//Variables

+

+VCC = 10.0                            //Source voltage (in volts)

+RC = 5.0                              //Collector resistance (in kilo-ohm)

+RE = 1.0                              //Emitter resistance (in kilo-ohm)

+beta = 50.0                           //Common emitter current gain

+VBE = 0.7                             //Emitter-to-Base Voltage (in volts)

+R1 = 50.0                             //Resistance (in kilo-ohm)   

+R2 = 10.0                             //Resistance (in kilo-ohm)

+Vs = 10.0                             //a.c voltage (in milli-volts)

+RS = 600.0 * 10**-3                   //Source resistance (in kilo-ohm)  

+

+//Calculation

+

+Vth = VCC * R2 / (R1 + R2)            //Thevenin's voltage (in volts)

+Rth = R1 * R2 / (R1 + R2)             //Thevenin's equivalent voltage (in volts)

+IE = (Vth - VBE)/(RE + Rth/beta)      //Emitter current (in milli-Ampere)

+r1e = 25.0 / IE * 10**-3              //a.c. resistance of emitter diode (in kilo-hm)     

+Ris = Rth * beta*r1e/(Rth + beta*r1e) //input resistance of the stage (in ohm)

+rL = RC * R1/(RC + R1)                //a.c load seen by the amplifier (in kilo-ohm)     

+Av = rL / r1e                         //Voltage gain

+vin = Vs * Ris / (Ris + RS)           //input voltage (in milli-volts)    

+vo = Av * vin                         //Output voltage (in milli-volts)

+Avs = Av * vin / Vs                   //Overall voltage gain 

+

+//Result

+

+printf("\n The output voltage is  %0.3f  V.\nThe overall voltage gain is  %0.2f .",vo*10**-3,Avs)