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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Tuesday, June 01, 2021 03:06 PM
Hobby Circuits List
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LINK to Dave's circuit, but DO NOT COPY any files to your WEB
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More
Indicator Circuits
Current Monitors |
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Bidirectional DC Current
Indicator
March 31, 2011 |
| This hobby circuit is
handy for battery powered systems. The circuit is self-powered using a single
3v lithium coin cell. The current draw is so low that the battery should last
for years. |
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| The
circuit flashes a red LED when DC current is drawn from the battery and flashes a green
LED whenever current flows into the battery. Two “probe” input wires connect
across a section of cable, which acts as a shunt resistor. A voltage of only 5mv
in either direction will trigger a LED indication.
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Click on Circuit Below to view PDF of Schematic |
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