On 26/08/2011 08:03, Pete Turnbull wrote:
On 26/08/2011 04:42, Jim Brain wrote:
> I'm struggling with designing adapters for situations where things sit
> right above a PCB (like the CBM 1541-II PCB under the disk mechanism)
> where there is not enough room
My usual need is for something like an EPROM with a
small number of
connections re-routed to different pins. In that case, I drill two sets
of oversized holes, one slightly larger than the other. The turned pins
in the larger holes become the pins of the carrier, and the turned pins
in the slightly smaller holes don't go through quite so far (most turned
pins have a step in the socket part). They become the socket, and I
break the pins off the bottom of those ones.
Another way, but rather taller, is to plug one turned pin socket into
another, breaking off the pins on the upper socket in places where they
need re-routed, filing down the socket part on the pin underneath that
if necessary to ensure no contact, and making the connections for those
with wire-wrap wire.
I just found something that illustrates the idea -- this particular
example is probably no use to Jim, as the interconnections are
encapsulated, but the picture shows the idea.
http://uk.rs-online.com/web/p/products/1583023/
See also the data sheet (or Google Wimslow Adaptics, part no W9114RC),
it has a good picture at the top of the first page.
--
Pete Peter Turnbull
Network Manager
University of York