Electronic ballast circuit

Details Electronic ballast circuit Electronic ballast circuit

1997-12-04

2000-03-07

Philogene, Haissa

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315244, 315209R, 315247, 315224, 315DIG7, 363 34, G05F 100

Patent

active

06034489&

ABSTRACT:
An electronic ballast circuit includes an input section which rectifies, power factor corrects and filters an AC input voltage to provide a rectified signal. The electronic ballast circuit also includes an inverter section which receives the rectified voltage and switches the rectified voltage to provide an AC signal to a resonant load circuit. The input section includes a resonant tank circuit which provides a high frequency current to the inverter to soft switch the switches within the inverter. In the input section, an inductor is placed on the AC side of a diode bridge rectifier advantageously allowing the removal of several prior art ballast circuit components since placing this portion of the power factor correction (PFC) circuit within the input circuit on the AC side of the diode bridge rectifier allows the bridge rectifier to perform both the rectification and current blocking functions. Advantageously, this reduces the cost of the electronic ballast circuit and increases its reliability since less components are required. In addition, the switching frequency of the switches is controlled to regulate the input current, while the switching duty cycle is independently controlled to regulate the output power.

REFERENCES:
patent: 3629647 (1971-12-01), Lake
patent: 4564897 (1986-01-01), Okamoto et al.
patent: 5283727 (1994-02-01), Kheraluwala et al.
patent: 5404082 (1995-04-01), Hernandez et al.
patent: 5410221 (1995-04-01), Mattas et al.
patent: 5416387 (1995-05-01), Cuk et al.
patent: 5434477 (1995-07-01), Crouse et al.
patent: 5434767 (1995-07-01), Bartarseh et al.
patent: 5459651 (1995-10-01), Maehara
patent: 5483127 (1996-01-01), Widmayer et al.
patent: 5519289 (1996-05-01), Katyl et al.
patent: 5534755 (1996-07-01), Deavenport et al.
patent: 5682086 (1997-10-01), Moo et al.
Chin S. Moo, Ying C. Chuang, Ching R. Lee, A New Power Factor Correction Circuit For Electronic Ballasts With Series-Load Resonant Inverter, 1996 IEEE, pp. 628-633.

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