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  1. 10-13-2011, 02:06 AM #1
    kc7jty
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    Quote Originally Posted by W5RB View Post
    It'll burn with the same brightness. The difference is that since the electrons in AC don't actually go anywhere , and only move back and forth , and thus are not used up , AC is 100% efficient .
    this seems to conflict with rms or is that just in a resistor producing heat?
    shouldn't the dc produce more heat/light?
    Last edited by kc7jty; 10-13-2011 at 02:08 AM.
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  2. 10-13-2011, 04:02 AM #2
    w2amr
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    I use DC to power the filaments in several radios, I don't think the tubes even noticed.
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