Patent ID: 6321167
Filing Date: 2001-11-20
Classification: B23K

Abstract:
A resistance-welding power supply apparatus for resistance welding materials to be welded by causing a welding current to flow through a pair of welding electrodes which are in press contact with the materials to be welded, said resistance-welding power supply apparatus comprising:a capacitor having one end electrically connected to one electrode of the pair of welding electrodes for storing a welding energy in the form of an electric charge;charging means for charging said capacitor;a transistor having a first terminal electrically connected to the other end of said capacitor and having a second terminal electrically connected to the other electrode of the pair of welding electrodes; andcontrol means electrically connected to a control terminal of said transistor for providing a switching control of said transistor at a predetermined frequency during a preset weld time.