LM317T Voltage Regulator with Pass Transistor

this chip can give you a regulated output from 1.5V to 13 Volts output... in put is 1,5 to 37 volts i think..... you can also buy it as a regulated output of 5 or 12 volts and others.... neg value chips also..... output is 1.5 amps......transistors can easily add up to 3 amps..... these are also control parts of bigger circuits. i will add this to my PWM to control the voltage to the main circuit.



http://www.youtube.com/watch?v=EmCtkUAO2V0&hl=en