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Topic: How fast does PWM actually need to pulse.... (Read 692 times) previous topic - next topic

AWOL

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If I hook a motor up to a battery through a manual switch and switch it off and on every 30 seconds, in theory that's PWM but too slow to fool the motor. The motor will run for 30 seconds at whatever speed it gets to for that battery, then go off for 30 seconds.
but, you have to admit, the average RPM over that time will reflect the supply duty cycle  ;)
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JimboZA

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but, you have to admit, the average RPM over that time will reflect the supply duty cycle 


True
Roy from ITCrowd: Have you tried turning it off an on again?
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cyclegadget


I have worked with some motors that produced over 25,000 HP and took more than 2 minutes to come to a stop after the power was removed. It took about 10 seconds to go from 0 to 1200rpm with full voltage applied to it.

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