nanog mailing list archives
Re: DC power versus AC power
From: Barney Wolff <barney () pit databus com>
Date: Sun, 29 Dec 2002 20:45:17 -0500
On Sun, Dec 29, 2002 at 08:11:46PM -0500, David Lesher wrote:
I'm surprised you're still around after a sub battery accident. They're a grade up from most CO's in available current, I'd bet.
I'd bet the other way. CO battery has to supply ring current, dial tone and voice current, not just run the switch itself, at least in the Copper Age. I don't think -48VDC is an electrocution risk unless you're sweaty, but a vaporized wrench sure can burn you, and I don't think GFIs existed for DC. Anyway, nukes don't need the battery capacity of the old diesels. -- Barney Wolff http://www.databus.com/bwresume.pdf I'm available by contract or FT, in the NYC metro area or via the 'Net.
Current thread:
- Re: DC power versus AC power, (continued)
- Re: DC power versus AC power Wayne Bogan (Dec 29)
- Re: DC power versus AC power Stephen Sprunk (Dec 29)
- Re: DC power versus AC power Wayne Bogan (Dec 29)
- RE: DC power versus AC power Kuhtz, Christian (Dec 29)
- Re: DC power versus AC power Rubens Kuhl Jr. (Dec 29)
- Re: DC power versus AC power Michael Painter (Dec 29)
- Re: DC power versus AC power David Lesher (Dec 29)
- Re: DC power versus AC power Scott Granados (Dec 29)
- Re: DC power versus AC power Charles Sprickman (Dec 29)
- Re: DC power versus AC power David Lesher (Dec 29)
- Re: DC power versus AC power Scott Granados (Dec 29)
- Re: DC power versus AC power Barney Wolff (Dec 29)
- Re: DC power versus AC power David Lesher (Dec 29)
- Re: DC power versus AC power David Diaz (Dec 29)
- Re: DC power versus AC power Scott Granados (Dec 29)
- Re: DC power versus AC power Michael Painter (Dec 29)
- Re: DC power versus AC power David Lesher (Dec 29)
- Re: DC power versus AC power David Lesher (Dec 29)
- Re: DC power versus AC power Owen DeLong (Dec 29)
- Re: DC power versus AC power Stephen Sprunk (Dec 29)
- Re: DC power versus AC power joe mcguckin (Dec 29)
- Re: DC power versus AC power Stephen Sprunk (Dec 30)