Light emitting circuit and lighting device
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United States of America Patent
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May 24, 2005
Grant Date -
Sep 25, 2003
app pub date -
Nov 28, 2002
filing date -
Feb 20, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A light emitting circuit includes: a first circuit H1 in which is provided a main light source 5, 6; and a second circuit H2 connected in parallel with the first circuit H1 and in which is provided an auxiliary light source 1, 2 and 3; wherein a drain (D) and a source (S) of an field effect transistor 4 are connected in the second circuit H2, and a gate (G) of the field effect transistor 4 is connected to the first circuit H1.
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