Thread: LED vs HID
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Old Dec 29, 2016 | 08:35 AM
  #19 (permalink)  
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KDW4Him
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Default Re: LED vs HID
Originally Posted by waldig
THe resistance of tungsten changes dramatically as they approach operating temp, power has to measured by E x I. Tungsten is positive temperature coefficient, more resistance with higher temps. Woody
If resistance goes up then I goes down so watts is less. Shouldn't that be less resistance when hot?
 
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