Power saver circuit for TFEL edge emitter device

Details Power saver circuit for TFEL edge emitter device Power saver circuit for TFEL edge emitter device

1992-04-28

1993-07-13

Mottola, Steven

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

340781, G09G 310, G09G 330

Patent

active

052276961

ABSTRACT:
An improved power saving drive circuit is provided for a multiplexed thin film electroluminescent (TFEL) array having a number of edge emitter devices. The drive circuit includes a charge circuit and a discharge circuit operatively connected to a load capacitance. Although the charge and discharge circuits may contain common elements, the discharge circuit usually has fewer windings than the charge circuit. A voltage regulator is provided to maintain the voltage on the load capacitor during the interval between charging and discharging thereof.

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