- Joined
- Jan 9, 2013
Well, we had a couple of machines(we are talking industrial machine like CNC and stuff) that house around 8 of these fans. I saved them before we tossed the broken machines. If i'm not mistaken these do NOT operate at standard PWM frequencies like 25KHZ. I've heard these run at 500hz, 50hz, 5khz? I can't seem to find the proper frequency. Anyone be able to help. Also i am building a PWM controller using Bings 556 design. Anyone have a clue what capacitor produces a frequency i'm looking for?
