B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 9/10 (2006.01) H02M 3/28 (2006.01) H05B 6/04 (2006.01)
Patent
CA 2190438
A welding power supply that includes a series resonant converter, including at least one switch and at least one capacitor is disclosed. The converter includes a switching circuit including an enable input. A voltage sensing circuit that determines the earliest safe switching time of the switch is provided. The safe switching time is the time that will prevent a peak voltage on the capacitor from exceeding a predetermined threshold for a next cycle of the converter. The voltage sensing circuit provides an enable signal to the enable input when the earliest switching time has passed, to enable the switching circuit. A pair of welding output terminals connected to the series resonant converter receives the output. A controller including a curve shaper, for providing a constant current output in the welding range is also disclosed. The controller also provides an adaptive hot start that provides varying amounts of energy in response to the welders skill.
Finlayson & Singlehurst
Miller Group Ltd. (the)
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