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bicyclebill
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Re: Oct. 24 - P. 3: The Basics of Electrical Circuitry
bicyclebill   10/24/2012 2:53:10 PM
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jojo--current can't come from nowhere, of course. But first--is that 2A steady state or a transient? If a transient, it may be from caps in the line filter. In general, caps anywhere in a system are a potential source of unexpected current flow (and voltage sparks) even after primary power is shut off. Old TVs for famous for this, with their high voltage supplies--you get get a lethal spark 30-60 minutes after shutting it off.



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