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JamesJudasPries's avatar
JamesJudasPries
Explorer
Oct 19, 2016

Light bulb ohms. What the heck is going on here?

Hello This is really bugging me. I decided to measure a new incandescent light bulb I was installing at home with a multimeter, since it had no marking. I thought sure, I could figure out if thi...
Chris_Bryant's avatar
Chris_Bryant
Explorer II
Oct 19, 2016
What they said- a bulb is the ultimate Positive Temperature Coeffecient Resistor- very low resistance while cold, resistance rises fast as it heats. Back in the 70's and 80's speaker manufacturers used 1141 bulbs in line with tweeters to limit current :)

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