Voltage range extender mechanism
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United States of America Patent
Stats
-
Apr 19, 2011
Grant Date -
Jun 19, 2008
app pub date -
Dec 17, 2007
filing date -
Dec 18, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An extended voltage range LED string driver comprising: an electronically controlled switch exhibiting a first port, a second port and a control port; a source of predetermined voltage connected to the control port of the electronically controlled switch; an LED string driver operatively connected to the first port of the electronically controlled switch; and a means for connecting an LED string to the second port of the electronically controlled switch; the electronically controlled switch being arranged to conduct between the first and the second port only when the voltage at the first port is within a predetermined range of said predetermined voltage.
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