The project name says it all. It is a device that will charge things like Ipods, PDAs, other other devices that plugs into a USB to charge.
The parts needed for this project are all in the second picture.
You will require:
LM or MC 7805 +5VDC Voltage Regulator
Type-A Female USB Port
100 UF Electrolytic Capacitor
0.1 UF Capacitor (any type would do)
150-160 ohm Resistor (optional)
9V Battery clip
2.2V 20mA LED color of your choice (optional)
Unprinted circuit board
ON/OFF (optional)
Related Links
More Circuit about 7805
More Circuit about Battery
More Circuit about Battery Charger
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lead acid battery Charger 6V -12V By 555 and LM340
Auto Charger battery 12V with PCB by IC 741
Read More source:
http://www.instructables.com/id/Portable-USB-Charger-Version-2.0/
This entry was posted on Monday, November 5th, 2007 at 7:15 am and is filed under battery charger, Power supply. You can leave a response, or trackback from your own site.
