I have a device which runs a small DC motor and can reverse the direction. I want add a speed control without completely starting again.
In the circuit below, if the 'PWM' box (perhaps a '555) generates a waveform which is positive for 75% of the time, will the motor be powered for 75% of the time regardless of the polarity of the input voltage?
In the circuit below, if the 'PWM' box (perhaps a '555) generates a waveform which is positive for 75% of the time, will the motor be powered for 75% of the time regardless of the polarity of the input voltage?