Ok, so I thought that a making a PWM controller would be a fun weekend project, it's been a week now and I still can't make it work properly. The circuit I'm using is from this website.
The circuit works perfectly with "small" motors e.g. 12V fans, 9V hobby motors and so on. When I connect a "bigger" motor such as the one from an electric drill or even RC car motors it just doesn't work. I can hear some humming and buzzing comming out of them but they won't even turn.
- I've tried changing the frequency to no avail.
- I know that the pwm signal works by hooking up leds and fans.
- I've tried switching the mosfet for other ones laying around and still nothing.