B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 11/24 (2006.01) B23K 9/10 (2006.01) H02M 1/10 (2006.01) H02M 3/28 (2006.01)
Patent
CA 2189721
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. Dual contactor switches respond to control signals from an AC sense circuit in order to configure the inverter power supply for the appropriate voltage input. The dual contactors may be mechanically interlocked and driven off the DC power for the control board.
Geissler Steven J.
Madsen Michael D.
Finlayson & Singlehurst
Miller Group Ltd. (the)
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