AC switch with zero off current for EL panel

Details AC switch with zero off current for EL panel AC switch with zero off current for EL panel

2005-10-27

2010-11-30

Choi, Jacob Y (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C315S2090SC, C363S097000

Reexamination Certificate

active

07843140

ABSTRACT:
A power supply for driving an EL panel includes an inverter that produces a polarity reversing voltage at a pair of output terminals. A switching circuit coupled to the output terminals and to at least one EL lamp applies alternating current to the at least one EL lamp in the on state and blocks current from the EL lamp in the off state. The switching circuit includes a first bidirectional switch connecting a first terminal of the EL lamp to a first output terminal and a second bidirectional switch connecting a second terminal of the EL lamp to a second output terminal.

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