I don't like the design of the voltage feedback circuit here.
It couples the AC side to gnd, and does so through a 100k resistor, which is barely safe (and in my view, any AC that is coupled to gnd isn't sufficiently safe unless it also has leakage detection).
It ought to use an optoisolator or even better have leakage detection, which isnt hard to implement in circuits like this.
It couples the AC side to gnd, and does so through a 100k resistor, which is barely safe (and in my view, any AC that is coupled to gnd isn't sufficiently safe unless it also has leakage detection).
It ought to use an optoisolator or even better have leakage detection, which isnt hard to implement in circuits like this.