Ballast circuits for gas discharge lamps

Details Ballast circuits for gas discharge lamps Ballast circuits for gas discharge lamps

1990-04-13

1992-07-28

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Transformer in the condenser load device circuit

315219, 315223, 315224, H05B 4136

Patent

active

051343444

ABSTRACT:
A ballast circuit includes a load circuit. A reservoir capacitor is effective to supply charge to the load circuit. A capacitive charge pump circuit is effective to transfer charge from a charge pump capacitive circuit to the load circuit and to the reservoir capacitor. The load circuit includes the primary winding of a transformer. A secondary winding of this transformer is for connection across a discharge lamp. In operation of the ballast circuit, the primary winding of the transformer drives the capacitive charge pump circuit.

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patent: 4961029 (1990-10-01), Shimizu et al.
patent: 4965493 (1990-10-01), Van Meurs et al.

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