Positive temperature coefficient light emitting diode light

Details Positive temperature coefficient light emitting diode light Positive temperature coefficient light emitting diode light

2006-12-19

2009-12-15

Paschall, Mark H (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S505000, C219S506000, C362S183000, C362S294000

Reexamination Certificate

active

07633037

ABSTRACT:
An apparatus includes electrical contacts coupled to a LED. The apparatus further includes a positive temperature coefficient resistor in operative thermal communication and electrically in series with the LED. A resistance of the PTC resistor varies as a function of a temperature of the LED.

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