Parallel-tuned electronic ballast

Details Parallel-tuned electronic ballast Parallel-tuned electronic ballast

1992-02-25

1993-02-23

Mis, David

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315, 315, 315, H05B 4129

Patent

active

051893428

ABSTRACT:
Power to a self-oscillating inverter ballast is supplied from a DC voltage source through an inductor means having two separate windings on a common magnetic core--with one winding being positioned in each leg of the power supply. The inverter is loaded by way of a parallel-tuned L-C circuit connected across the inverter's output, thereby providing a sinusoidal voltage thereat. A fluorescent lamp is connected by way of a current-limiting capacitor with the inverter's output.

REFERENCES:
patent: 3155875 (1964-11-01), Wenrich et al.
patent: 3340458 (1967-09-01), Keller
patent: 3341737 (1967-09-01), Rosa
patent: 3800210 (1974-03-01), Caussin
patent: 4277726 (1981-07-01), Burke
patent: 4307353 (1981-12-01), Nilssen
patent: 4469988 (1984-09-01), Cronin
patent: 4692667 (1987-09-01), Nilssen

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