Low-noise drive circuit for electroluminescent lamp, and electroluminescent lamp assembly comprising same
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United States of America Patent
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Mar 6, 2001
Issued Date -
N/A
app pub date -
Aug 18, 1999
filing date -
Aug 18, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit driving an electroluminescent lamp at a frequency at or in the vicinity of the lower threshold of human hearing, thus reducing objectionable noise otherwise generated by such lamps when operated at high frequencies. In an electroluminescent lamp assembly including such driving circuit is described, the electroluminescent lamp is driven at low frequency, but nonetheless provides a high level of illumination output.
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