Instructables: exploring - technology - supply - usb - battery http://www.instructables.com Sun, 14 Sep 2014 19:17:50 PDT BLOX v1.01 Dual USB Charger With Switching Regulator http://www.instructables.com/id/Portable-USB-Charger-1/
Dual USB Charger With Switching Regulator - More DIY How To Projects]]> http://cdn.instructables.com/F4N/NFE4/GB5HDVV6/F4NNFE4GB5HDVV6.SQUARE2.jpg http://cdn.instructables.com/F4N/NFE4/GB5HDVV6/F4NNFE4GB5HDVV6.SQUARE.jpg http://cdn.instructables.com/F4N/NFE4/GB5HDVV6/F4NNFE4GB5HDVV6.SMALL.jpg rocketman221 This is a portable USB Charger. It uses a high efficiency switching regulator that runs at 85 - 94% efficiency depending on input voltage and load. It takes an input voltage from 8 to 16 volts and can run from anything from a 9 volt battery to a car battery. It has 2 USB ports and easily charges 2 p...
By: rocketman221

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Sun, 11 Jul 2010 23:21:23 PDT
$2 Cassette Box Cellphone/USB Charger http://www.instructables.com/id/2-Cassette-Box-CellphoneUSB-Charger/
$2 Cassette Box Cellphone/USB Charger - More DIY How To Projects]]> http://cdn.instructables.com/FMI/BY3W/FAQDXA7V/FMIBY3WFAQDXA7V.SQUARE2.jpg http://cdn.instructables.com/FMI/BY3W/FAQDXA7V/FMIBY3WFAQDXA7V.SQUARE.jpg http://cdn.instructables.com/FMI/BY3W/FAQDXA7V/FMIBY3WFAQDXA7V.SMALL.jpg babblin5 I love the Mintyboost power supply/charger Instructables, but wanted to look for something a little readily available that doesn't see much use anymore and that was a little easier to customize. Going through a few stores of odds and ends, I came across an old cassette tape collection, and there it ...
By: babblin5

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Wed, 2 Jan 2008 15:52:11 PST
Replace the battery on a desktop gadget with USB power http://www.instructables.com/id/USB-Battery-Replacement/
Replace the battery on a desktop gadget with USB power - More DIY How To Projects]]> http://cdn.instructables.com/FJ6/XJ1O/F0X27XG9/FJ6XJ1OF0X27XG9.SQUARE2.jpg http://cdn.instructables.com/FJ6/XJ1O/F0X27XG9/FJ6XJ1OF0X27XG9.SQUARE.jpg http://cdn.instructables.com/FJ6/XJ1O/F0X27XG9/FJ6XJ1OF0X27XG9.SMALL.jpg berserk I have a set of noise cancelling headphones at work. The active part does a nice job on the building ventilation and computer fans, and the passive part on my co-worker's phone conversations. I didn't like the idea of wasting batteries, though, and the system didn't seem to like even NiMH rechargeab...
By: berserk

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Wed, 25 Apr 2007 23:47:30 PDT