AC switch with zero off current for EL panel
AssigneeRogers Corporation
InventorsChristopher Eric Papke, Harold Gee Yee, Robert Allen Kimball
Life of this patent
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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.
Claims8
In a power supply for driving an EL panel, said power supply including an inverter that produces a polarity reversing voltage at a pair of output terminals, the improvement comprising:
- a switching circuit for coupling an EL lamp to the power supply, the switching circuit including a first bidirectional switch connecting a first terminal of an 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.
Dependencies are inferred from the claim text.