Topics created by mrhasan

Several people have used the Auber Instruments SSR and report good results with it. The Crydom one is too expensive for most people to consider.

I think the difference with the Auber and Crydom SSRs must be that they provide voltage for the mosfet gate drive from the control input through am oscillator and a transformer. That would mean they don't need a voltage drop across the load side to provide the gate voltage, and it is only the mosfet on-resistance that gives rise to a voltage drop.

There are also inexpensive 5-terminal SSRs such as the PowerExpander from reprap.me.