lm317 as current regulator

elix

Mar 25, 2007
50
Joined
Mar 25, 2007
Messages
50
on the data sheet it says you can make a current regulator by just putting a resistor on the adj and out pins 1.25/R = current out, why is it pulling 1.5A with a 100 ohm resistor?

 

ante1

Jan 24, 2004
4,138
Joined
Jan 24, 2004
Messages
4,138
It must be damaged, with a 100R resistor the current should be about 12.5mA!
Or, it is not connected the way it should!

 
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