... of single phase ac voltage transformer, synchronization is the collection module phase detection circuit, phase shifting trigger circuit, and output silicon ... (1) the anode and cathode by the (2).2, (3) (4) for module with internal department transformer primary, there are 220 VAC ... voltage for 285 VAC ~ 420 VAC; (3) (4) no polar requirements.3 COM, for in-house module, CON for control terminals, + 5 V ...