ISOLATED FEEDBACK SYSTEM FOR POWER CONVERTERS
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United States of America Patent
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Issued Date -
Nov 24, 2011
app pub date -
May 19, 2011
filing date -
May 22, 2010
priority date (Note) -
Abandoned
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Abstract
An isolated feedback system for power converters includes an error amplifier for receiving an input voltage to output an error signal; a modulator circuit to modulate the error signal with a carrier signal; an acoustic transformer unit, one end of the acoustic transformer connected to the modulator circuit, where a frequency of the carrier signal is away from resonant frequencies of the acoustic transformer; and a demodulation circuit connected to the other end of the acoustic transformer and receiving the modulated signal.
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