RE: Instrument cluster repairs...solution...maybe

["Bill Collins" <photo@intrex.net>]

I don't think the resistance is enough to matter.  Pulling some numbers out of the air:

If each defroster line pulls 1 amp, it has a resistance of around 13 ohms, or about 4 ohms per foot.  A patch in an instrument cluster trace 1 inch long (that's a big gap to bridge!) would have a resistance of 1/3 ohm, which isn't much in most applications.

Bill

---------- Original Message ----------------------------------
From: "Gerry Reichelt" <greichelt@mmcable.com>
Date: Fri, 10 Nov 2000 12:45:08 -0600

>   Good point!
>   Gerry
>
>-----Original Message-----
>From: owner-scirocco-l@scirocco.org
>[mailto:owner-scirocco-l@scirocco.org]On Behalf Of Aaron Ness
>Sent: Friday, November 10, 2000 8:32 AM
>To: 'Gerry Reichelt'; scirocco-L@scirocco.org
>Subject: RE: Instrument cluster repairs...solution...maybe
>
>
>I have concerns about this.  Isn't the rear defrost grid a resistive
>conductor (realistically, anything is, but not designed to be so)?  I think
>it would have to be to generate the heat required to melt stuff, which is
>what it's doing.  Assuming this is the case, wouldn't the repair stuff be a
>similar material?  If so, you're replacing an ideally non-resistive trace in
>the circuit with a resistor.  If the voltage drop isn't a problem, that's
>great, but it seems you could run into some sort of problem with it.
>
>Aaron
>
>
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