My load power should be 25mW.This is what I have done to choose the resistance values:
1) I put Vcc= 18 V
2) I choose Ve= 9 V to get maximum swing
3)Vb= 9 V+ 0.6 V =9.6 V , from that I got the ratio R1/R2
4) The load will take around 20 mA peak value to dissipate 25mW , so I have biased my transistor to draw 25 mA at Q point
5) From Re=Ve/Ie = 9 V/ 25 mA , I got Re= 360 ohms
6) The capacitance were calculated assuming a low cutoff of 20 Hz
As a summary : R1= 1k , R2=1.143k , Re= 360, RL= 150 ohms.
However the simulations are not giving me my expected values what have I missed here ?View attachment 162221
1) I put Vcc= 18 V
2) I choose Ve= 9 V to get maximum swing
3)Vb= 9 V+ 0.6 V =9.6 V , from that I got the ratio R1/R2
4) The load will take around 20 mA peak value to dissipate 25mW , so I have biased my transistor to draw 25 mA at Q point
5) From Re=Ve/Ie = 9 V/ 25 mA , I got Re= 360 ohms
6) The capacitance were calculated assuming a low cutoff of 20 Hz
As a summary : R1= 1k , R2=1.143k , Re= 360, RL= 150 ohms.
However the simulations are not giving me my expected values what have I missed here ?View attachment 162221
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