Remote Mains PWM

[HenrikOlsson]

Hi,

They should be 180 out. I thought 180 off will not upset a triac.

I'm pretty sure there are three phases, shifted 120°, 230VAC between each phase and neutral and 400VAC from phase to phase in the UK. (At least that is what we have here) But please do correct me if I'm wrong!

Anyway, if the outlet providing the reference (zero crossing) and the outlet actually providing the current to the load is not on the same phase it won't work properly because they are not "in phase" - obvioulsy.

Can't you just, as a test, power the load from the same outlet as the control circuit just to see if it works or not.

/Henrik.

[The Master]

I believe that is correct for 3-phase supplies. Our house runs on a single phase (only 2 wires into the entire house). All sockets are connected together on a ringmain.