DEVELOPMENT OF SWITCHED MOSFET ARC WELDING POWER SOURCE

The paper mainly deals with the basic principles of the switched MOSFET arc welding power source The feedback of current is used to obtain the constant eurrent characteristics. A new low voltage arc-ignition circuit has been put forward. The satisfactory tests of arc-ignition and good properties of welding process may prove this switched MOSFET arc welding power source to be an electronic power source with broad prospects.