Electronic ballast circuit for independently increasing the power factor and decreasing the crest factor
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United States of America Patent
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Aug 17, 1999
Grant Date -
N/A
app pub date -
Jul 15, 1997
filing date -
Jul 15, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
The device provides a power-supply section (3) connected to an AC source (21) and an inverter section (5) for supplying power to an electrical load (9, 11) through an oscillating circuit (13, 15). Two capacitors, a filter and a smoothing capacitor (27, 29) are arranged between a rectifier bridge (25) and the controlled cutouts (33, 35) of the inverter. The power-supply section (3) has an inductor (39) with a value such that the power-supply section (3) exhibits a predominantly inductive behaviour towards the inverter section (5).
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