Four-quadrant pulse width modulated DC/AC converter
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United States of America Patent
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-
Dec 5, 1995
Grant Date -
N/A
app pub date -
Jun 14, 1993
filing date -
Oct 19, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pulse width modulated DC/AC converter includes an input circuit galvanically insulated from an output circuit. The input circuit includes two branches connected in parallel to a pair of input terminals which receive a direct current voltage. Each branch includes an inductor, and a bidirectional switching element which may include a transistor in parallel with a diode. The output circuit has a similar configuration with the addition of two filtering capacitors connected across the output terminals. The converter has a wide range of applications, such as a ringing generator in a telephone system, an emergency supply for a computer system, or as a driving stage for a AC motor.
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