Voltage regulator tutorial & USB gadget charger circuit

The basics of linear voltage regulators – what they do, how to wire them up, and where to find them. Then I give a basic example of how to build a 5V supply that can power USB powered gadgets.
5 volt regulators: http://www.amazon.com/exec/obidos/ASIN/B01M32I31S/afromods-20
(Amazon affiliate link)
This video builds on material covered in my tutorial on building unregulated power supplies: http://www.youtube.com/watch?v=cyhzpFqXwdA
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