Re: Basic current question

On Mon, 12 Jun 2006 17:44:48 GMT, Jonathan Kirwan
<jkirwan@xxxxxxxxxxxxxx> wrote:

Unless there is a known reason otherwise, the resistance in a wire in
a diagram should be mentally treated as a perfect conductor.

Actually yes, I was trying to figure out if connections matters in a
long chain of components when total current draw is low, say 2A vs 5A.

Sometimes, it helps to redraw things this way.

Yup, that does make it much clearer when I was confusing myself. The
silly thing is, I actually got the thinking right at first, then had a
brain fart when I started putting in numbers :/

in high current circuits where the resistance
can matter, in high voltage circuits where some physical distance may
help

How high is high? I was wondering as said, if putting something
further down the chain could cause it to fail simply due to the
voltage drop. i.e. in a typical PC, you get connectors in a chain of
parallel connections, and usually when people run out, they start
adding splitters. So I figured that if you used too much wire (nothing
huge say just 20cm per extension), things at the end of the chain will
simply not get enough voltage esp since more things = more current =
higher IR losses right?

Somebody told me it's the resistance of the connectors, especially if
the mating is poor, that is probably going to cause problems rather
than wire length. But I couldn't find any information on how to
determine that, searching a site like www.molex.com was just PITA and
spec pages don't appear to tell how much resistance the pins have.
--
A Lost Angel, fallen from heaven
Lost in dreams, Lost in aspirations,
Lost to the world, Lost to myself
.

Relevant Pages

  • Re: Crisis of logical faith
    ... the universe contains *ALL SYMMETRY*, ... the connections between them without aid of mathematics. ... The concept of "empircal disconnection" is itself invalid ... and the symmetry is maintained (not lost). ...
    (sci.logic)
  • Re: Lost for several weeks...has Ray published his paper?
    ... With all the philosophy names floating up on the island's shore ... I am a late arrival on the Lost bandwagon. ... like all the connections to Australia. ... Can't you watch episodes of BSG and Lost on the SciFi Channel and ...
    (talk.origins)
  • Re: Lost for several weeks...has Ray published his paper?
    ... Or maybe John Locke's communion with the island is ... I am a late arrival on the Lost bandwagon. ... like all the connections to Australia. ... John S. Wilkins, Philosophy, University of Queensland ...
    (talk.origins)
  • Re: Lost for several weeks...has Ray published his paper?
    ... John Wilkins wrote: ... I am a late arrival on the Lost bandwagon. ... like all the connections to Australia. ... You could always steal them with Bittorrent. ...
    (talk.origins)
  • Re: Lost for several weeks...has Ray published his paper?
    ... John Wilkins wrote: ... I am a late arrival on the Lost bandwagon. ... like all the connections to Australia. ... Can't you watch episodes of BSG and Lost on the SciFi Channel and ...
    (talk.origins)
Loading