December 30th, 2009, 06:07 PM
How would I make a circuit to light up an indicator LED when the current to another circuit is broken? I'd say I have an elementary understanding of circuit design and can build them if I have a schematic but this is a little beyond me. Is there some kind of component that allows current to pass through unless another current is applied somewhere else?
haha.. never mind. I found something and it works perfectly. I just wasn't hunting hard enough. http://www.extremecircuits.net/2009/...m-circuit.html
Two resistors and one LED.
February 5th, 2012, 10:12 AM
can i have a simple ciruit for this witricity
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