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Diffstat (limited to '1382/CH5/EX5.22/EX_5_22.sce')
| -rwxr-xr-x | 1382/CH5/EX5.22/EX_5_22.sce | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/1382/CH5/EX5.22/EX_5_22.sce b/1382/CH5/EX5.22/EX_5_22.sce new file mode 100755 index 000000000..ed68c4392 --- /dev/null +++ b/1382/CH5/EX5.22/EX_5_22.sce @@ -0,0 +1,29 @@ +// Example 5.21:mid band gain and upper 3 db frequency +clc; +clear; +close; +Cpi=40;//in pico farad +Vt=26;//voltage in milli volts +Beta=150;// +Icq=1;//current in milli ampere +rpi= ((Beta*Vt)/Icq)*10^-3;// +gm=(Icq/Vt)*10^3;//transconductance in mili ampere per volt +rs=1;//in killo ohms +re=0.5;//in killo ohms +g=(rs*re)/(rs+re);// +m=rpi/(1+Beta);// +tpi= ((m*g)/(m+g))*Cpi*10^-7;// +fh1=(1/(2*%pi*tpi*10^4));//first 3-db upper cut off frequency in mega hertz +Rc=4.7;//collector resistance in killo ohms +Rl=10;//load resistance in killo ohms +Rld= (Rc*Rl)/(Rc+Rl);// +Cmu=3;//capacitance in pico farad +R1= 50;// in kilo ohms +R2= 5;// in kilo ohms +Rb= (R1*R2)/(R1+R2); +fh2=(1/(2*%pi*Cmu*10^-8*Rld*10^3))*10^-2;//second 3-db upper cut off frequency in mega hertz +x=(m*re)/(m+re);/// +Avm=(gm*Rld*x)/(x+rs);// +disp(fh1,"3-db upper cut off frequency in mega hertz is") +disp(fh2,"second 3-db upper cut off frequency in mega hertz") +disp(Avm,"MIDBAND GAIN") |