DC to AC switching circuit for driving an electroluminescent lamp exhibiting capactive loading characteristics
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United States of America Patent
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-
Jun 27, 2000
Issued Date -
N/A
app pub date -
May 13, 1999
filing date -
May 13, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A switching circuit is provided for converting a DC voltage to an AC voltage required for driving an electroluminescent lamp. The switching circuit charges and discharges the electroluminescent lamp with a substantially constant current to thereby reduce peak currents and extend lamp life. A constant current discharge feature of the switching circuit results in a significant reduction in current consumption.
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