question about biasing

jsteigs · 20th February 2005, 10:30 AM

how do you choose values for biasing transistors? i've looked and read thoroughly through several websites but have not been able to understand it clearly.

any help is appreciated

jsteigs · 21st February 2005, 08:21 AM

will somebody pleeeaaase help?

anatech · 21st February 2005, 12:10 PM

Stick some common values in and change them as required for your circuit. It's nice to have the pot centered for the desired bias but not manditory.
Use a variac for startup until the values are close to what you want. A light bulb will work if you can't get to a variac.
-Chris

20th February 2005, 10:30 AM	#1
jsteigs diyAudio Member Join Date: Oct 2004	question about biasing how do you choose values for biasing transistors? i've looked and read thoroughly through several websites but have not been able to understand it clearly. any help is appreciated

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21st February 2005, 08:21 AM	#2
jsteigs diyAudio Member Join Date: Oct 2004	will somebody pleeeaaase help?

21st February 2005, 12:10 PM	#3
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Stick some common values in and change them as required for your circuit. It's nice to have the pot centered for the desired bias but not manditory. Use a variac for startup until the values are close to what you want. A light bulb will work if you can't get to a variac. -Chris

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