ELECTRONIC DEVICE FOR CONTROLLING THE SUPPLY OF ELECTRICAL POWER TO RESISTANCE WELDING EQUIPMENT, IN PARTICULAR AS USED IN METAL BOX CONSTRUCTION

摘要

of the DISCLOSURE The device disclosed, which would be connected to a three-phase power source, comprises a single static converter incorporating a rectifier and stabilizer block and a transistorized inversion block the output signal of which is controlled by an amplitude and frequency regulator in response to a feedback signal taken off the primary or the secondary winding of the welding transformer; the device features an additional rectifier block located between the output from the secondary winding and the input to the welding rollers. BACKGROUND of the INVENTION The invention disclosed relates to an electronic device for controlling the supply of electrical power to resistance welding equipment.