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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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graphics of Discovercircuits.com are copyright protected.
LINK to Dave's circuit, but DO NOT COPY any files to your WEB
SITE server |
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More
AC to DC Power Supplies
Voltage Regulators |
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9v Battery Eliminator |
If you use 9v battery powered devices for long periods of time, you may get tired of
constantly changing batteries. The circuit below can be wired into any 9v battery
powered device, drawing power from an external AC to DC power adapter. I
designed
the circuit around a very common LM317 adjustable voltage regulator.
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circuit uses any off-the-shelf +12v to +15v power adapter. These are very common and can
be purchased from a variety of sources. I included an illustration showing how to
make a 9v battery clip, so the eliminator can just snap onto the electronic device’s
battery clip. |
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Click on Circuit Below to view PDF of Schematic |
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