Switching power supply with AC waveform capability
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United States of America Patent
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-
Oct 15, 2002
Grant Date -
Dec 6, 2001
app pub date -
Mar 6, 2001
filing date -
Jan 20, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A switching power supply which generates AC power, as opposed to DC power. A transistor opens and closes to thereby generate charge-discharge cycles through an inductor-resistor combination. Each charging current is compared with a reference waveform which changes slowly over time, compared with the opening and closing of the transistor. When each charging current exceeds the then-current value of the waveform, the transistor is opened, inducing a discharge cycle. This operation produces an output power waveform which is a replica of the reference waveform.
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