Question about LDRs

Started by MattAnonymous, April 20, 2004, 06:35:03 PM

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MattAnonymous

LDR are just photo resistors, right?  Also, how do I measure the resistance of them with an analog multimeter?
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The Tone God

LDR= Light Dependant Resistor so I would call them a photo resistor. :) To messure the light and dark resistance you could just throw the thing under a box or magazine, or something like that for the dark reading and for light put a good amount of light like say a desk lamp or a bright LED. Don't blast it with a bright bulb since thats an unrealistic amount of light.

Andrew

Hal

you measure their resistance just as you would measure any resistance on your analoge meter...