Switching control system for controlling an inverter of a spot r

Details Switching control system for controlling an inverter of a spot r Switching control system for controlling an inverter of a spot r

1992-03-13

1993-07-20

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

363 74, B23K 1124

Patent

active

052295672

ABSTRACT:
A DC resistance welding apparatus includes a pair of welding electrodes for sandwiching workpieces to be welded therebetween and a circuit connected to the welding electrodes for supplying a welding current to said welding electrodes. The circuit includes a plurality of parallel-connected rectifying circuits each having a welding transformer and rectifying circuit. The circuit allows a large welding current to be supplied to workpieces, and makes the DC resistance welding apparatus small in size and light in weight.

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patent: 4748550 (1988-05-01), Okado
patent: 4792656 (1988-12-01), Namiki et al.
patent: 4910375 (1990-03-01), Izume

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