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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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In Reply to: RE: Odd means of lighting an LED in YBA Integre DT. posted by Nagratech on January 26, 2011 at 08:17:57:
They sure do, but I do like the way they sound (or don't sound, however you want to articulate it.)
The answer is:
The LED lights due to the stray capacitance in the switch that transfers enough of the 60 Hz 120 VAC to the LED's wires to light it. If they didn't short the LED when the switch was off, it would be on all the time. The high voltage readings are still a bit of a mystery to me, but the high input impedance of the DVM can lead to strange behaviour, and "ghost voltage readings" that would disappear if any substantial load were present. It would be interesting to view it on a scope, but I didn't bother.
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Follow Ups
- RE: Odd means of lighting an LED in YBA Integre DT. - h_h 11:27:17 01/27/11 (2)
- RE: Odd means of lighting an LED in YBA Integre DT. - Michel 20:48:16 02/03/11 (1)
- Thanks, I didn't see it, but I'll look again. - h_h 10:22:57 02/04/11 (0)
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