Resonant inverter including feed back circuit with source of...

Details Resonant inverter including feed back circuit with source of... Resonant inverter including feed back circuit with source of...

2006-04-18

2006-04-18

Vu, David (Department: 2828)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C315S307000, C315SDIG002

Reexamination Certificate

active

07030570

ABSTRACT:
A resonant inverter with a self-oscillating driver IC for powering AC loads, such as gas discharge lamps or regulated DC/DC converters, includes a timing circuit that generates control strobe pulses that are injected into the timing circuit. The timing circuit is coupled to an inverter resonant tank through a feed back circuit providing phase lock for the resonant inverter. The feed back circuit includes a source of variable bias current connected to an input terminal of a zero signal detector to shift an angle at which polarity changes to control a frequency for the resonant inverter.

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IR Design Tip DT98-1, “Variable Frequency Drive using IR215X Self Oscillating IC's”, pp. 1-7, 1999.

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