Ballast feedback scheme

Details Ballast feedback scheme Ballast feedback scheme

1998-12-18

2000-08-08

Philogene, Haissa

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

315244, 315247, 315209R, 315DIG5, 315DIG7, H05B 3702

Patent

active

061006467

ABSTRACT:
A ballast feedback scheme including a single stage current feedback inverter. To avoid overboosting of the voltage impressed across a buffer capacitor only a portion of the high frequency lamp current is fedback to the buffer capacitor during both ignition and steady state operation of the lamp. Ignition of the lamp is well controlled.

REFERENCES:
patent: 4511823 (1985-04-01), Eaton et al.
patent: 5404082 (1995-04-01), Hernandez et al.
patent: 5982110 (1999-11-01), Gradzki
patent: 5994848 (1999-11-01), Janczak

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