Pulse-width-modulation control circuit
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United States of America Patent
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May 4, 1999
Grant Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Dec 18, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A PWM controlling circuit includes a signal generator and two PWM controllers. The signal generator comprises an oscillator, a plurality of inverters, and two RC delay networks. The oscillator and the inverters are composed of elementary elements, respectively, such as diodes, resistors, inverters and capacitors. The PWM controlling circuit in accordance with the present invention can be implemented with low cost, and the duty cycles thereof are not limited to 50%.
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