Re: An URL

From: Andrew Swallow (am.swallow@eatspam.btinternet.com)
Date: 04/11/03 

From: "Andrew Swallow" <am.swallow@eatspam.btinternet.com>
Date: Fri, 11 Apr 2003 12:21:18 +0000 (UTC)

"Lassi Hippeläinen" <lahippel@ieee.orgasm-research.invalid> wrote in message
news:3E96A1F8.C70C19AC@ieee.orgasm-research.invalid...
> "John E. Hadstate" wrote:
> <...>
> > Such a gaffe might be (should be) completely overlooked in a magazine
like
> > Time or Newsweek. In a magazine whose primary audience is Electrical
> > Engineers, "carrying 10 kV of dc power" leaves me feeling sick to my
> > stomach.
>
> Maybe the source was
> http://zdnet.com.com/2100-11-529826.html?legacy=zdnn, which says:
> "Making a surreptitious tap of a live cable would also require
> circumventing the electrical charge--usually around 10,000 volts--which
> is used to power the devices that keep the speeding light beams strong."
>
> At least the IEEE noticed that if a thing is measured in volts, it ain't
> charge ;-)
>

10,000 volts dc could be used for long distance transmission of
electrical power under water. The under-water power cable
between England and France for instance is direct current.
However for a signalling cable that is an enormous voltage.

Andrew Swallow

Relevant Pages

  • Re: 12v TV
    ... what was being pointed out is that the mains power supply outpts 12 volts... ... hence the TV's components are made using the lowest tollerance parts available, no need to use more expensive higher voltage parts when the TV will never see more than 12.3 volts. ... as a fair few people found out tho, plugging it into the caravans battery directly... ... i have a large solar array on my vans roof, and it does an equalizing charge every month, takes the batteries upto 16 volts for a few hours to balance them all out and stir up the cells, my Tv would have let the magic smoke out first time it did that for sure. ...
    (uk.rec.caravanning)
  • Re: He who laugh last, laughs loudest, was Re: Wet your pants funny-- A.J. as an EE
    ... if you look at the LM675 spec sheet it shows 90db of power supply ... If the power supply voltage varies ... going to get 60 volts peak-to-peak out, which is about 20 volts RMS ... So this added resistor has used up all the IC's power ...
    (rec.audio.tubes)
  • Laughing even louder at the "engineers", thanks Old Hack Re: He who laugh last, laughs loudest, was
    ... if you look at the LM675 spec sheet it shows 90db of power supply ... If the power supply voltage varies ... going to get 60 volts peak-to-peak out, which is about 20 volts RMS ... So this added resistor has used up all the IC's power ...
    (rec.audio.tubes)
  • Re: He who laugh last, laughs loudest, was Re: Wet your pants funny-- A.J. as an EE
    ... if you look at the LM675 spec sheet it shows 90db of power supply ... If the power supply voltage varies ... going to get 60 volts peak-to-peak out, which is about 20 volts RMS ... So this added resistor has used up all the IC's power ...
    (rec.audio.tubes)
  • Re: Can PCs turn on/off their remote PCs?
    ... (at 120 volts) ... stuff enough inside of a Mac Pro to pull that kind of power. ... Turn on/off regulated 240 volt power to any selected outlet, ... Turn off/on raw unregulated power to the input of the UPS. ...
    (comp.sys.mac.advocacy)
Loading