Paul_KD7HB:
Only electrolytic capacitors have + and - markings. They need to be wired so the voltages match the markings on the capacitor body.The small capacitors we were referring to are not polarized and can be installed any direction.
Paul
Allright thanks, i googled that already and the bigger ones i have here have the plus on the long lead.
But i'll solve the problem by using a brushless fan if i can get it working at least...it only goes full speed and doesn't care for the pwm from my code which is analogwrite at 25khz.
If i can't get it working i'll try the capacitors but i would have to solder them in the leads and put tape around it, that all doesn't look good to me. Brushed fans cause EMI so i want to get rid of it and install much more microelectronics.