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Voltage Range Extender Mechanism

  • US 20080143266A1
  • Filed: 12/17/2007
  • Published: 06/19/2008
  • Est. Priority Date: 12/18/2006
  • Status: Active Grant
First Claim
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1. 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 said control port of said electronically controlled switch;

    an LED string driver operatively connected to said first port of said electronically controlled switch; and

    a means for connecting an LED string to said second port of said electronically controlled switch;

    said electronically controlled switch being arranged to conduct between said first and said second port only when the voltage at said first port is within a predetermined range of said predetermined voltage.

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