class B (or is it AB?) design mods

Aug 20, 2011 3 Replies

Found a circuit:

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What parts would have to change if I were to use +/- 6VDC instead of



+/- 12VDC, and use a 4 ohm speaker instead of an 8 ohm one?

Would it still work if I use +/- 3VDC?


EXP_6.html#xtocid158349

Change the 10k on the final to 4.7k (or lower, for the +/-3V version). The circuit is going to have considerable crossover distortion, particularly as frequencies go up and the slew rate across 0V increases. But it's a teaching web site, and you'll learn something.

Tim Wescott Control system and signal processing consulting www.wescottdesign.com

"Recovering Madman"

** None.

** Very, very badly.

Find a circuit DESIGNED for low supply voltages.

... Phil

Why not be daring and use =/- 3mv dc

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