How to Quiet a Noisy Motor

And no, I don’t mean a loud motor… I am talking about electronic noise and feedback. Recently, I have been developing a circuit that controls the direction of a 12V DC Denso automotive power window motor using limit-switches. The circuit worked well when prototyped using LED’s and small motors, but moving on to the 12V Denso, every time the direction was to be reversed, a huge amount of electronic noise would travel back into the circuit. Everything would trigger uncontrollably, and the motor wouldn’t know which way to go. There was a lot of grinding, and very luckily, no sparks or smoke.

Here’s a checklist of the methods you can try to implement in the hopes of minimizing/eliminating electronic noise from a DC motor.
READ ON…