Re: I need a reminder, what causes voltage drop..

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#615

From: John Tserkezis
Date: Tue, 15 Feb 2005 20:28

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alitonto wrote:

> I am trying to work out in particular which component is most likely to
> cause a reduced voltage at the supply point to its circuit. I suspect
> there is something pulling too much current ahead, becuase when I
> disconnect the circuit then the supplied voltage returns to normal
> measurement.

  Along with all the other suggestions, you might get lucky if you feel for 
not-normally-warm components, which will give you a clue as to which area to 
look in.

  If the supply in question is fairly low impedance, there won't be enough heat 
to feel, so you'll need to cut tracks and remeasure, in an attempt to find 
which branch is pulling it down.

  At one stage, we were lucky and had use of a thermal imaging camera.  You can 
spot warmer components quite easily that way.  Though not probably the cheapest 
specific-use diagnostic equipment... :-)
-- 
Linux Registered User # 302622                         <http://counter.li.org>

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Date: Wed, 16 Feb 2005 07:28:04 +1100
From: John Tserkezis <jt@techniciansyndrome.org.invalid>
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