Hello there, Im having some trouble with a PWM circuit i made to drive a lab power supply that i was making, But ive ran into some problems.
The power supply unit is just a basic computer power supply with all the rails (Ground,+5,+12) wired together (sepretley).
I decided to control the power output with a PWM device, A capacitor and a coil. The PWM device ranges from 12v to 24v at 10-20A.
So far ive had no luck, ive soldered the circuit up, but its been malfunctioning. Sometimes it outputs 10v from a 12v source, and sometimes its 0v, And on the occasion it would work, but vary it by 0.7v.
I re-soldered it, just incase i had dry joints, but that wasnt the case. I dont think any of the components would be damaged, I soldered the IC socket on first, then the mosfets then the caps followed by resistors. I dont see much potential for compnent failiure.
Thanks in advance, Nitrousoxide