LM317T Voltage Regulator with Pass Transistor

Using the LM317LZ 100ma adjustible voltage regulator and one resistor, you can make a constant current source. With the LM317 1.5 amp version, you can make one with higher currents. I made an error during the video: I said volts when I mean milliamps. (you probably figured that out though).



http://www.youtube.com/watch?v=2UDVLeCqZl0&hl=en