PDA

View Full Version : PWM not working



TACAMO
04-22-2010, 08:57 PM
Hi, I bought a PWM online, Worked great until I fried the output transistors. I replaced the two transistors with 4 IRF510 transistors. after this it worked better than the original. Today I was testing it on a little light bulb. As I increase the duty cycle the light starts to get brighter(as it should) but once I hit the halfway mark and beyond the light starts to dim. Whats going on.