LM317T Voltage Regulator with Pass Transistor

Part of 'Building a Solar Charge Controller' at www.256.co.uk. The final packaging phase requires that the controller is weatherproof, in fact waterproof, but still lets light from the LED out. The circuit board has been encapsulated in clear heat shrink sleeving and sealed with hot glue.



http://www.youtube.com/watch?v=lJsW5QFX66U&hl=en