This instructable shows you how to build an adjustable 12-volt power supply that would make a great addition to your electronics workbench. Having an adjustable power supply is really important when tinkering with electronics. This looks like a fairly simple build with unlimited uses.
This is an Instructable that tells you how to make an adjustable voltage regulator, which has endless applications. It can be used to test your LED’s and other low voltage loads, and there is another terminal for higher voltage applications.
More about making a DIY 12-volt adjustable power supply
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