Lamp ballast control circuit and method

Details Lamp ballast control circuit and method Lamp ballast control circuit and method

1991-01-09

1992-09-22

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

315287, 315307, 315DIG2, 315DIG7, H05B 4136

Patent

active

051500140

ABSTRACT:
A circuit arrangement and a method suitable for operating a low-pressure mercury discharge lamp which includes circuitry for adjusting the average amplitude of the current provided to the lamp as well as circuitry for adjusting the modulation of the current provided to the lamp.

REFERENCES:
patent: 4498031 (1985-02-01), Stupp et al.
patent: 4652797 (1987-03-01), Nilssen
patent: 4701671 (1987-10-01), Stupp et al.

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