According to the attachment, if I place the AC input of a full wave rectifier as the load, would this circuit switch effectively? The MOC3061 has zero crossing. According to the second circuit, someone told me:
Zero crossing will work for the first 1/4 cycle, but then
a) There will be no current flow to the "zero-volt switch" IC for it to know when the zero-cross happens, because "2200uF" is charged to 170V & all bridge diodes are reverse biased.
b) Even if a firing pulse is given to triac @ zero-cross, it will not latch-on, because the available current is below "hold-on" current for Triac
What do you think of?