LM317T Voltage Regulator with Pass Transistor

via YouTube Capture.



http://www.youtube.com/watch?v=kcsVs61wdbQ&hl=en

This video is the chronicling of the making of a small solar powered portable USB charger for charging cameras, mp3 players, ipods, blackberry, or any other mobile device that will charge from a usb port. The power storage on this device is achieved through the use of a clearance $7 radio...



http://www.youtube.com/watch?v=8hqv4F-OnUA&hl=en

Voltage regulator worked well. unit has passed testing and is cleaned and re-assembled.



http://www.youtube.com/watch?v=8tgbvJpdzKM&hl=en

http://www.youtube.com/watch?v=_whnJYBDsmU&hl=en

home made portable charger with 5pcs 2W solar moduls Contents: - bad jeans, sewing machine, Velcro - 5 * 2W solar panels - 1 * schottky diode - 1 * 7812 (12V/1A voltage regulator) - 2 * 100nF capacitors - 1 * LED diode (increase output voltage to 14.3V) - 1 * heatsink - 1 * deans T connector Output: 14.3V; ~700mA; ~9.8W ha4bf.ham-radio-op.net



http://www.youtube.com/watch?v=HnmX_A_Y1l8&hl=en