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  1. 12-30-2020, 06:55 AM #11

    shownomercy's Avatar
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    Quote Originally Posted by Catmaigne View Post
    Dunno if DC motors care about pulsed frequency as long as Vpk is within rating. I would put a flyback diode across the fans just to be safe.

    There are pieces of audio equipment that drive DC fans off the speaker jacks. Granted, the power consumed by the fan is really small compared to the speakers, but the fan is happy with everything in the audio band, ie 20Hz-20kHz.
    Believe the highest driving freq I can go is 1000hz, so gotta play with the frequency and low DC a bit more. I have 10amp, 50v diodes for flyback protection, just need to install em with final setup.

    Quote Originally Posted by SSlowBoat View Post
    correct, brushed motors generally are unhappy about that.

    Sent from my SM-N975U using Tapatalk
    Guess I shall see how they last with it, goal is to use this a trial to then PWM my fuel pump.
    Correlation does not imply causation.

    Una salus victis nullam sperare salutem
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