Electronic ballast circuit for independently increasing the powe

Details Electronic ballast circuit for independently increasing the powe Electronic ballast circuit for independently increasing the powe

1997-07-15

1999-08-17

Shingleton, Michael B.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

315224, 315209R, 315244, H05B 3702

Patent

active

059398370

ABSTRACT:
The device provides a power-supply section (3) connected to an AC source (21) and an inverter section (5) for supplying power to an electrical load (9, 11) through an oscillating circuit (13, 15). Two capacitors, a filter and a smoothing capacitor (27, 29) are arranged between a rectifier bridge (25) and the controlled cutouts (33, 35) of the inverter. The power-supply section (3) has an inductor (39) with a value such that the power-supply section (3) exhibits a predominantly inductive behaviour towards the inverter section (5).

REFERENCES:
patent: 5426344 (1995-06-01), Wong et al.
patent: 5500576 (1996-03-01), Russell et al.
patent: 5517086 (1996-05-01), El-Hamamsy et al.
patent: 5521467 (1996-05-01), Statnic et al.
patent: 5557176 (1996-09-01), O'Brien
patent: 5565743 (1996-10-01), Yamashita et al.
patent: 5610474 (1997-03-01), Schmitt

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