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Old 20th May 2016, 09:48 AM   #1
TroelsM is offline TroelsM  Denmark
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Join Date: May 2003
Location: AARHUS. DK
Default OpAmpAmp for sub


I've seen numerous power amps with an op-amp for input.

Looking in my old "applications of operational amplifiers" from BB i found two circuits and combined them into the ugly thing seen below.

Bias i class B. Purpose is only sub-duty below 200Hz and I would like to minimize current and have it totally thermally stable.

I know there are 10.000 good proven amplifier out there, and I'll probably never build this, but simulated it for fun in a 15minute break at work.

transistors are NOT chosen for ample voltage/current rating, - it's just what I could find in the LTSpice.

It is extremely simple. Probably too simple. BUT, would actually work?

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