Hi, I'm currently trying to solve a problem involving the design of a common emitter amplifier stage in an autobias configuration. The information I'm given is that
Vcc=12
Vbe=0.7
gm=0.12
hfe=120
RS=500
RL=1000
Gv=29.5dB
There should be max power transfer from source to load and max output voltage swing under AC.
So far I have calculated values for Rc and R1//R2 due to the requirement for max power transfer so that
RC=1000
R1//R2=1000
However I'm now stuck trying to find a value for RE and individual values for R1 and R2. I know it has something to do with calculating the quiescent collector current using the AC load line, and that Vce will be 0 thus eliminating it from calculation.
Essentially I need to work out how to find a value for RE. Ive attached a circuit diagram and any help would be greatly appreciated. Also i welcome any questions or discussions on my own thoughts how to solve this no matter how wrong i may be, ive been going round in circles for hours.
Vcc=12
Vbe=0.7
gm=0.12
hfe=120
RS=500
RL=1000
Gv=29.5dB
There should be max power transfer from source to load and max output voltage swing under AC.
So far I have calculated values for Rc and R1//R2 due to the requirement for max power transfer so that
RC=1000
R1//R2=1000
However I'm now stuck trying to find a value for RE and individual values for R1 and R2. I know it has something to do with calculating the quiescent collector current using the AC load line, and that Vce will be 0 thus eliminating it from calculation.
Essentially I need to work out how to find a value for RE. Ive attached a circuit diagram and any help would be greatly appreciated. Also i welcome any questions or discussions on my own thoughts how to solve this no matter how wrong i may be, ive been going round in circles for hours.
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