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USB TTL 9V Stepdown Voltmeter Male Multi Module DIY Gadget
Arduino-based Switching Voltage Regulators
Build Adjustable DC-DC Converter on Flowerpad Protoboard
Regulated power supply on the cheap
Two circuits of switched mode power supply based on the 555 timer
AC-LED Night Lamp
The Tweeting Intercom: (Door Strike) Relay Monitoring w/ Raspberry Pi
Yet another simple nightvision
Portable USB phone - iPod charger using Swiched mode power supply
Hack a trickle solar vehicle charger
Posted:Apr 21, 2009
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