Multi-resonant electronic power converter with a wide dynamic range
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United States of America Patent
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Jun 25, 1996
Grant Date -
N/A
app pub date -
Sep 24, 1993
filing date -
Sep 24, 1993
priority date (Note) -
Expired
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Abstract
Methods and apparatus for variably converting a DC voltage to a different DC voltage level are effected by a multi-resonant electronic power converter with a wide output voltage dynamic range. The power conversion is accomplished by converting the DC voltage to an AC signal, adjusting or attenuating the AC signal to the desired amplitude, and then converting the AC signal back to a DC voltage. The output voltage may be adjusted by altering the frequency of the AC signal also known as the switching frequency. A wide dynamic range is achieved at a narrow switching frequency bandwidth by inserting either a fourth or higher order low pass filter or a notch filter at the output of the switching transistor. The high roll-off rate exhibited by either filter provides a relatively high dynamic range in a narrow frequency range.
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