by SHARANYADAS @ instructables.com:
I am playing with electronics since i was a child and made numerous circuits.But still now,i didn’t made any power supply unit for general purpose use.So tired of making PSU for each circuit,I decided to make a stable Bench PSU for general purpose use with some enhanced features.I decided to made the core power supply analog controlled and extra features digitally controlled. So that’s why i choose LM350 linear regulator chip as the heart because 3A is sufficient for day to day use.
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3A Variable Bench PSU with Color Display – [Link]
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