🚀 go-pugleaf

On Fri, 25 Sep 2009 16:02:55 -0700 (PDT), mickgeyver
<eyezkubed@yahoo.com> wrote:

>I'm trying to make a 10x scope probe that is capable of dealing with
>slightly higher voltage levels of about +/- 20v yet at a high
>impedance ~20Meg. This link "http://picasaweb.google.com/
>UncleAltheKiddiesPal/Probe?feat=directlink" has some photo's showing
>the probe and board warpage. The board was made from double sided
>0.020-inch stock etched with a PCB milling machine (perhaps part of
>the problem). It is (obviously) hand assembled.  I would appreciate
>any tips or techniques that I could use to keep this board from
>turning into a potato chip during assembly.
>
>Thank you.
>
>al

  Purchase rigid (of course) Silica plates (heat sink media).  You could
very likely get 0.020" thickness, no problem.  You could also likely get
the exact size you need as well.  Then you proto by dead bug (or not)glue
the chips and other parts on, and hand wire the nodes between them.  Your
proto could then turn into a flex circuit to replace all the hand wiring
for the SMD circuitry, glued (attached) onto one of your already existing
Silica base plates that you bought say 100 of for the first proto and
production runs.

  As small as it looked, I could easily build many of them a day even as
proto style.  But the flex circuit with the heat absorbing capable Silica
back plate sounds like a candidate for being called a solution.