adjustable dc voltage regulator

circuit diagram ========http://tinyurl.com/y53dnu6y
video of no 2==========http://tinyurl.com/yyyetnxd

Powerful DC variable supply with LM317 and 2n3055
Commonly we use fix voltage regulator when we have to fix voltage for any circuit. Many times we need variable voltage power supply to control the voltages according to our choice and here we needed a variable voltage power supply. LM 317 is is best choice for this purpose, Draw back of lm 317 is that it can control and can be uses in very low amperes, In this article i will clear how can some one make a power full DC variable power supply with the use of LM317 with the addition one more transistor.

Видео adjustable dc voltage regulator канала Robo projects