... , and can increase the soft start function. Widely used for light, heat, pressure regulating transformer equipment.According to different ... way silicon controlled by (1) the anode and cathode by the (2).2, (3) (4) for module with internal department transformer primary, ... 4) no polar requirements.3 COM, for in-house module, CON for control terminals, + 5 V for internal auxiliary power output, and only ...