Simple 5V power supply for digital circuits

Posted on May 6, 2012

This circuit is a small +5V power supply, which is useful when experimenting with digital electronics. Small inexpensive wall tranformers with variable output voltage are available from any electronics shop and supermarket. Those transformers are easily available, but usually their voltage regulation is very poor, which makes then not very usable for digital circuit experimenter unless a better regulation can be achieved in some way. The following circuit is the answer to the problem.

Simple 5V power supply for digital circuits
Click here to download the full size of the above Circuit.

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