Patents Represented by Attorney Walter Egbert

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  • Switching scheme for power supply having a voltage-fed inverter
    Patent number: 5781418
    Abstract: A power supply is disclosed which includes a resonant circuit, and a voltage-fed inverter producing an applied voltage at an output coupled to the resonant circuit, the inverter responsive to a driving signal. A driving circuit has an input representing the sensed current flowing through the resonant circuit and includes phase-shifting circuitry. The driving circuit produces the driving signal based on phase-shift of the sensed current by the phase-shifting circuitry.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: July 14, 1998
    Assignee: Philips Electronics North America Corporation
    Inventors: Chin Chang, Joseph En-Cheng Chang