AC switch with zero off current for EL panel
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United States of America Patent
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Nov 30, 2010
Issued Date -
N/A
app pub date -
Oct 27, 2005
filing date -
Oct 27, 2005
priority date (Note) -
Expired
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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.
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