Re: galvanic reaction

["Jackcsg" <nospam@xxxxxxxxxx>]

Are you serious?
If you are....Radio Shack may have the answers you need. Their answers may
even be within your realm.

"Dr. Phil" <nospam@xxxxxxxxxx> wrote in message
news:F_U2e.7477$vK6.770@xxxxxxxxxxxxxxxxxxxxxxxxx
> Why do manufacturers give us resistors that are made of a different
> metal than the copper wire we are using?  High voltage electricians know
> that you can't connect an aluminum and copper wire directly to each
> other.  Roofers know you can't nail copper flashing with aluminum nails.
> Simple moisture in the air can cause galvanic reaction between the
> copper wire and whatever the resistors are made out of [looks like
> aluminum] causing the least noble metal to deteriorate.  Yes Robert it
> does happen, even if you haven't noticed it in your 40 years in the
> trade.;)  Any resistor experts out there?  Why are most resistors I have
> seen not made out of copper?  Must be some reason.