I've been trying, unsuccessfully, to dim a 60W incandescent light bulb with two back-to-back MOSFETs, similar to this web page:
- Channel 1: Live_230VAC
- Channel 2: DIM_GPIO
- Channel 3: Drain of Q5
- Channel 4: Source of Q5 and Q6
Q6 gets burning hot, Q5 stays cool. The lamp (obviously) flickers as we are only getting every other half wave. Thinking about the circuit, I feel that it will be impossible to get a Vgs voltage that is higher than the voltage at the source pin, since the source pin will see the peak of the 230VAC?
Is there a way (preferably simple & cheap :)) of solving this kind of double MOSFET dimmer?