Resonant inverter including feed back circuit having phase...

Details Resonant inverter including feed back circuit having phase... Resonant inverter including feed back circuit having phase...

2006-05-16

2006-05-16

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

07045966

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 connects the resonant tank circuit to a zero signal detector. The feed back circuit includes a phase compensator and a controller that has a source of a bias current connected to the zero signal detector.

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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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