Hello everyone..I have been trying to make a lm317 bench power supply using this circuit. Basically I want to use a 12volt battery as input(fully charged to 13volts) and 1.25v to 11v variable output.
I have using this circuit: http://www.ladyada.net/images/diytools/schem.jpg
For R1, I am using 220R resistor and for R2 I am using a 1K potentiometer. But I can only vary the voltage from 1.25V to 6.88V.
I have put the LM317 on a big heatsink.
What may be the problem with the circuit? Please Help.
Regards
Aman Sammy
I have using this circuit: http://www.ladyada.net/images/diytools/schem.jpg
For R1, I am using 220R resistor and for R2 I am using a 1K potentiometer. But I can only vary the voltage from 1.25V to 6.88V.
I have put the LM317 on a big heatsink.
What may be the problem with the circuit? Please Help.
Regards
Aman Sammy