Recent content by Welni

Hi there, The clicking sound shouldn't be a problem. In fact, many cheap PWM controlled fans make it. It happens because of the steep signal edges. Better fans have some integrated ICs to power the motor more gently and reduce the sound level. Anyway if you check datasheets of same fans, one...

I'm sorry, i'm not an expert, but if you still need it, you might want a bigger resistor at the output. This one will dissipate 1,44W at 12V output. I'd also think about a cap to flatten the voltage. Alternations in the voltage may couse the fan to stick to certain harmonic frequencies of the...