Power selection and protection circuit responsive to an input vo

Details Power selection and protection circuit responsive to an input vo Power selection and protection circuit responsive to an input vo

1994-02-07

1995-08-29

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 36, 363143, 219137PS, B23K 910

Patent

active

054466415

ABSTRACT:
An inverter power supply for use with various voltage inputs is provided. The inverter power supply generally receives 208 VAC single-phase, 208 VAC three-phase, 230 VAC three-phase, 230 VAC single-phase, 460 VAC single-phase, or 460 VAC three-phase power and provides a DC output current for welding, heating or cutting applications. The power inverter circuit includes a first tank circuit and a second tank circuit which are configured in serial or parallel according to a particular voltage input. Contactors, relays, or semiconductor switches respond to control signals from an AC sense circuit in order to configure the inverter power supply for the appropriate voltage input.

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"Automatic Input-Selecting Power Supply", IBM Technical Disclosure Bulletin, vol. 28, No. 3, pp. 1246-1247, Aug. 1985.

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