>What they did instead was to silkscreen a carbon-looking coating onto
>the pads for the switches. This was a single layer PCB, as well, and
>they really needed a 2-layer PCB. To get the second layer, they put
>jumpers on the board. These jumpers were the same carbon material
>silkscreened over the soldermask between pads! Obviously these =
"jumpers"
>were not in high current paths.

I have seen a Japanese stereo unit, one of those all in one midi unit =
things, where the PCB was single sided, and some "tracks" were silk =
screened on the component side using a conductive paste similar to that =
used in hybrid circuits.

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu