Hi Gents
I have a Fan from EBM RG148 which is 230v but the electronics are 4 wire to drive the fan which are 24v GND Tach and PWM, i have done a sketch to drive the PWM using ESP32 but i have hit a wall with the Circuit to drive the PWM, i have read about 0-10v to drive the fan but the one i have is different, i have uploaded a picture of the only diagram the manufacturer as sent me, i have asked them for part numbers which im waiting for a response, can someone help me on this issue regards Dave
