Voltage range extender mechanism

Details Voltage range extender mechanism Voltage range extender mechanism

2011-04-19

2011-04-19

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Plural periodic switches or multiple contact periodic switch

C315S186000, C315S299000, C315S312000

Reexamination Certificate

active

07928662

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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patent: 6621235 (2003-09-01), Chang
patent: 6700407 (2004-03-01), Wert
patent: 6956727 (2005-10-01), Brokaw
patent: 7265504 (2007-09-01), Grant
patent: 7482760 (2009-01-01), Jungwirth et al.
patent: 2002/0113555 (2002-08-01), Lys et al.
patent: 2002/0158590 (2002-10-01), Saito et al.
patent: 2005/0093792 (2005-05-01), Yamamoto et al.
patent: 2005/0200312 (2005-09-01), Komiya et al.

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