An Adjustable Breadboard Power Supply by LM317

This Instructable will show you how to build an adjsutable breadboard power supply entirely from Radioshack parts. It can provide multiple voltages directly to the power rails on a prototyping breadboard. This could be useful for people on a low budget, who donâ€™t like to order parts online, or who need a good weekend project.

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The-Radioshack%2c-Adjustable%2c-Breadboard-Power-Suppl/
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Circuit Project Electronic

An Adjustable Breadboard Power Supply by LM317