Controllers, power supplies and control methods
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United States of America Patent
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Aug 15, 2017
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app pub date -
Nov 12, 2014
filing date -
Nov 17, 2010
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Abstract
Power supplies together with related over voltage protection methods and apparatuses. A power supply has a transformer including a primary winding and an auxiliary winding. A power switch is coupled to the primary winding and a sensing resistor coupled between the power switch and a grounding line. A multi-function terminal of a controller is coupled to the sensing resistor. A diode and a first resistor is coupled between the auxiliary winding and the multi-function terminal.
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