Hello,
today I built LM317 LD driver. http://www.rog8811.com/LM317%20components01.jpg?0.35312663627278806. Problem is that when I turn on, resistors are on 5 Ohms, voltage between LD+ LD- is almost the same like power supply. Power supply ~7.6V (not fully charged). I added test load, Turned POT till LD +- voltage became 2.9V, but current now is only 20mA. Here is something wrong or it's ok? My LD need max 3v and 340mA
today I built LM317 LD driver. http://www.rog8811.com/LM317%20components01.jpg?0.35312663627278806. Problem is that when I turn on, resistors are on 5 Ohms, voltage between LD+ LD- is almost the same like power supply. Power supply ~7.6V (not fully charged). I added test load, Turned POT till LD +- voltage became 2.9V, but current now is only 20mA. Here is something wrong or it's ok? My LD need max 3v and 340mA