- Joined Apr 16, 2020
I have a small brushed DC motor that I want to be able to vary the speed of with a potentiometer. The motor wants 120V DC but I only have 120V AC available. Can I rectify the AC input, smooth it out, and lower the RMS output using a properly sizes resistor to bring the DC output down from 170V to 120V? Wiring diagram below.
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