Variable switching frequency power supply plasma cutters
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United States of America Patent
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Mar 6, 2018
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N/A
app pub date -
Apr 10, 2014
filing date -
Apr 24, 2013
priority date (Note) -
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Abstract
A power supply, for a plasma cutter or a plasma arc welder, having a variable switching frequency and method of operating the power supply is generally disclosed. The power supply includes a switch for setting the switching frequency and a chopper control circuit for determining current output from the power supply, determining an operating frequency based on the determined current output and setting the switching frequency based on the determined operating frequency.
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