Fluorescent lamp ballast

Details Fluorescent lamp ballast Fluorescent lamp ballast

1985-10-04

1987-08-25

Dixon, Harold

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Discharge device and/or rectifier in the primary circuit of...

315 97, 315 99, 315219, 315222, H05B 3702

Patent

active

046895248

ABSTRACT:
An electronic fluorescent lamp ballast having at least an energy storing component, a controlling component which has two states, and two socket elements which enables the filaments of the fluorescent lamp to be connected in series with the energy storing component. A constant current flows through a portion of the energy storing component when the controlling component is in one state producing an "energy latching" effect which will enable the ballast to achieve a very high efficiency of energy transfer. The ballast also has a self adjustable frequency of operation as a function of lamp impedance variation due to age and enables constant ionization within the fluorescent lamp.

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