Controls Using SCR Technology
From a single phase power supply, the low frequency welding control utilizes an inversed parallel pair of
Silicone Controlled Rectifiers (SCR) to control the output the welding power transformer.
SCRs are turned on
by pulsing a gate with a voltage signal. The welding control uses predictive algorithms to determine the best
point to pulse the gate of the SCRs during the half cycle of the alternating current supply.
