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Zener Diode Shunt Regulator
Kurt E. Clothier
5V stabilised supply for USB hub
Improved Simple Adjustable DC Power Supply
Universal USB Power Supply Kit
9V to 5V Regulated Power Supply - SMD
Cheap Voltage Regulated Joule Thief power supply/charger
Switch mode LED torch
Using the Pololu 5V Boost Regulator
Pocket USB charger
Posted:May 27, 2012
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