Need help with biasing a common emitter amplifier

Thread Starter

EarlAnderson

Joined Nov 13, 2011
166
I am trying to build a common emitter amplifier as a preamp stage to a class AB output amplifier which I plan to use to drive a couple of speakers, but I'm having a little trouble trying to figure out the right resistor values to use to bias it. I've turned to the Internet for help, with no luck so far. It would be much appreciated if someone could help me with choosing the right resistor values to use. Thanks :)
 

#12

Joined Nov 30, 2010
18,210
If you run into noise problems, the jfet is good at fixing that.
It all depends on exactly what levels of signal you are trying to pre-amp.
Good calculating.
 
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