3 ms·
The -12v rails are typically low current though. The real danger is a poorly built supply or an electrolytic capacitor exploding in your face (had this happen o
by AlexandrB 4y ago
The -12v rails are typically low current though. The real danger is a poorly built supply or an electrolytic capacitor exploding in your face (had this happen once).
Incidentally, does anyone know what the -12v rails are used for? Some kind of reference?
- aaronmdjones 4y agoIf memory serves, the -12V rail is useful for onboard audio op-amps.
- Gibbon1 4y agoRS-232 drivers like the old MC1488 were run off plus and minus 12 volt supplies. DRAMS like the MK4116 also required a low current -5V bias supply. And there were other chips that possibly needed a -5V supply. Since the -5V was low current you could generate it off the -12V with a simple linear regulator.