Felipe La Rotta from Engallamientos de La Rotta has built a number of cool DIY projects, this DIY Bench Power Supply is one of my favorites. Everyone who is tinkers with electronics will eventually need to progress from a battery as a power supply to a plug in wall wart then eventually to variable supply. This DIY supply quite a good variable supply since it is based on a computer power supply that can supply tons of current at quite a stable voltage. It uses a LM317 and a pot to allow a variable output in addition to the fixed outputs. Best of all the finished boxed supply looks great which isn’t always the case with all DIY projects. I can look around and see that lots of my projects that were created for some utility perform well but look like they were made in my basement.
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