| ??? 07/20/07 15:42 Read: times |
#142085 - another Weekend Way Off Topic |
the telephone companies use minus 48V.
the 48 is probably due to the batteries used in the olden days, but why minus older cars often have the plus connected to the chassis. I this just 'what was chosen for no reason' or was there a reason for it Just curious Erik |
| Topic | Author | Date |
| another Weekend Way Off Topic | 01/01/70 00:00 | |
| Electrolytic effects - and further off-topic... | 01/01/70 00:00 | |
| I faintly recalled something about electrolysis... | 01/01/70 00:00 | |
| And whath about older cars "plus"-ground? | 01/01/70 00:00 | |
| maybe the same reason... | 01/01/70 00:00 | |
| Try an alternate form of the question. | 01/01/70 00:00 | |
| What's in a name? | 01/01/70 00:00 | |
| references | 01/01/70 00:00 | |
| Hanging ground straps | 01/01/70 00:00 | |
| Another possible use for hanging ground straps | 01/01/70 00:00 | |
| No contact while driving | 01/01/70 00:00 | |
| ECL chips use positive grounding | 01/01/70 00:00 | |
| Going way - way off - off topic | 01/01/70 00:00 | |
| Car tyres conduct | 01/01/70 00:00 | |
ground straps | 01/01/70 00:00 | |
| Upside down... | 01/01/70 00:00 | |
| after 2 hours googling | 01/01/70 00:00 | |
| It is for corrosion | 01/01/70 00:00 |