Self-generating resonant power supply and method of producing po

Details Self-generating resonant power supply and method of producing po Self-generating resonant power supply and method of producing po

1994-02-17

1995-10-03

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363134, H02M 114

Patent

active

054557585

ABSTRACT:
A resonant power supply for use in conjunction with power transistor switching circuits. In one embodiment, a series-connected LC resonant circuit is coupled to the high voltage pulsed output of the power transistors and designed to draw power from the pulsed output and deliver the same to a low voltage output capacitor at which a low voltage output is provided. The low voltage output is regulated by a zener diode connected in parallel with the output capacitor. A starting resistor of a relatively high value, typically in the Megohm range, supplies initial charge to the output capacitor to permit the first switching event to occur so that the resonant power supply can begin to provide power. The resonant frequency of the LC circuit is significantly higher than the maximum switching frequency of the power transistors, enabling the resonating high frequency wave forms of the LC circuit to supply repeated charge bursts to the output capacitor.

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