[sdiy] stupid solder

[Colin Fraser]

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl 
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of Edu Silva
> Sent: 11 July 2002 9:24
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] stupid solder
> 
> You know, two different metals (solder and copper, for example), under
> certain circunstances (imersed in a acid solution), can do this.
> Moisture from the air + poluition + acid atmospheres, etc...  
>  It works
> like a small lead-acid battery.

Or even two different metals simply connected together with a
temperature difference - thermoelectric/Seebeck effect.
I wonder if this is of any significance in electronic circuits where an
IC is running hotter than the rest of the circuit, and there is a
temperature gradient between the IC legs and PCB tracks thru the solder
joint.

Colin f