LED driver circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 10, 1988
Grant Date -
N/A
app pub date -
Oct 9, 1985
filing date -
Oct 9, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An LED driver circuit including a current source for generating constant drive current to a plurality of series connected LEDs, circuitry for selectively enabling and disabling predetermined ones of the LEDs and further circuitry for disabling the current source in the event none of the LEDs are enabled. The LED driver circuit is of simple design and low cost, and is characterized by low power consumption due to the current source being disabled in the event none of the LEDs are enabled.
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