Originally Posted by jenu67
Buna ! Ma intereseaza o schema electrica a regulatorului pompei laing ddc 3.1. Mai precis ce tranzistor este la Q4. Cine doreste sa-mi raspunda astept un raspuns. Va multumesc!
One of the requirements for this forum is to use ENGLISH.
ITT/Laing makes the pumps in Hungry. They only know the PCB surface mount components. As for the PWM controlling of the pump, that is Laing proprietary for OEs like Apple, Dell, Alienware and HP. Laing will never give that out to an end user. Sorry. Your best solution is a fan speed controller.