Electric heating – Metal heating – By arc
Patent
1996-02-29
1998-09-22
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21913032, 363 40, B23K 910
Patent
active
058117571
ABSTRACT:
A power source for a plasma cutting tool includes first and second power switching circuits and a controller. Each power switching circuit includes a switch for switching electrical power to a respective output, and the outputs of the power switching circuits are connected in parallel. The controller controls the switches in response to a desired output for the power source. The controller also includes a synchronizer for synchronizing the first and second switches so that both of the switches switch electrical power at a common duty cycle. The synchronizer can also maintain a 180 degree phase relationship between switching of the first and second switches. Related methods are also discussed.
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Shaw Clifford C.
The ESAB Group, Inc.
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