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Subject: Re: PWM and constant voltage
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Date: 02/19/03 at 1:11 PM
Posted by: Russ Kincaid
In Reply to: PWM and constant voltage posted by aldor on 02/19/03 at 7:48 AM:
If you make the maximum duty cycle 25%, that will be equivalent to 3 volts applied to the motor. The motor should not be harmed by short pulses of 12 volts. If you want to control the speed, you can read the motor voltage during the time the mosfet is off (if the motor is shunt field type). The motor will generate a voltage proportional to RPM.
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