I saw this:
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Then realized:
- Maxim parts are made of unobtanium.
- The MAX4295 is only good to 2 Watts.
Ah, phooey.
Michael
efficient motor speed control using Class D audio amplifiers
Oct 08, 2008
4 Replies
Since the amp is fed DC, this is really just simple PWM, right? You can roll this yourself or probably adapt a DC/DC power suppy chip.
Ah, hit by the blindingly obvious... Class D amp driving a motor = 555
- mosfet + protection diode...
Michael
LMD18201
John
Thanks. I was looking to control a 12V, 8A (peak startup current) pump motor, but maybe class d audio amps are not the most efficient way of going about it... I'm now looking into surplus laptop power supply (~100W, 12V) + 555 + mosfet PWM.
Michael
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