SMPS Power supply: MP 3800
I have a 12V brushed DC motor hooked up to a PWM controller. When I run the motor (all works as it should) however there is a lot of crackling noise coming from the PSU.
Note: Snubber diode (or 'Flyback' diode) added due to PWM Controller manual recommendation.
Considering the PSU has its own PWM...am I creating dirty power by chopping the signal once again with my PWM controller?