What to do with a bunch of slightly depleted 9V batteries?
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08-08-2014, 07:34 PM
Post: #8
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RE: What to do with a bunch of slightly depleted 9V batteries?
(08-08-2014 06:40 PM)everettr Wrote: If you don't include a series resistor in the circuit, neon bulbs make great short circuits! I learned about current-limiting as a child when I poked the leads of a bare neon bulb into an electrical socket. There was sound and heat, and as the spots slowly faded from my vision, I remember being slightly puzzled by seeing how short the leads had become. As I recall my experience, it was a 2W resistor that didn't seem to have any purpose being in my nightlight. |
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