Hello,
I used LM317 regulator in an adjustable power supply connected to a filament ( working under vacuum ). This circuit worked correctely for several weeks and now is dead. My printed circuit board has been checked and is OK. Normally this IC is thermaly protected and also protected against short circuit. Has someone met same kind of problems with this IC ?
I used LM317 regulator in an adjustable power supply connected to a filament ( working under vacuum ). This circuit worked correctely for several weeks and now is dead. My printed circuit board has been checked and is OK. Normally this IC is thermaly protected and also protected against short circuit. Has someone met same kind of problems with this IC ?