Power supply unit for arc processing

Details Power supply unit for arc processing Power supply unit for arc processing

1991-10-29

1993-04-06

Voeltz, Emanuel T.

Electric power conversion systems

Current conversion

With means to connect the input to diverse power sources

363 37, 363126, 323299, H02M 704

Patent

active

052008878

ABSTRACT:
A power supply for arc processing which can be used with a commercial AC power supplying either a high or low voltage, with the low and high voltages having a ratio of 1:2. The power supply includes two or three rectifying circuits connected in parallel, each of which comprises three series diodes, with a first series connection point of each series connected diodes being connected to one of the input terminals (phases) of the commercial power supply. The power supply further includes two or three voltage change over circuits, comprising a capacitor and a voltae change-over switch, closed at a low voltage input, connected between a second connection point of its corresponding rectifying circuit and the first connection point of another rectifying circuit. An inverter circuit for inverse conversion is connected in parallel between the terminals of the three rectifying circuits.

REFERENCES:
patent: 4268899 (1981-05-01), Rokas
patent: 4658345 (1987-04-01), Ingman
patent: 4937731 (1990-06-01), Konopka

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