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From: simoni@strat.Stanford.EDU (Richard Simoni)
Newsgroups: sci.electronics
Subject: PC board jumper ideas?
Message-ID: <1990Nov30.032401.27217@cascade.Stanford.EDU>
Date: 30 Nov 90 03:24:01 GMT
Sender: news@cascade.Stanford.EDU (USENET News System)
Reply-To: simoni@strat.stanford.edu
Organization: Stanford University
Lines: 23


I am building an expansion daughter board for a computer, and I need access
to some of the signals on the existing motherboard.  All of the signals I
need are found on the pins of standard DIP chips on the motherboard.  No
fancy surface mounting, just DIPs soldered into a 4-layer board.  Now...
does anyone have any good ideas on how to connect a jumper wire off of those
pins?  Ideally, the mechanism contacting the pins should be soldered in
place, while still allowing the wire itself to be removed, as in a
plug/socket arrangement.  My own ideas are:

1.  Place an IC socket on top of the chip with the desired signal(s), with the
socket pins resting on the upper "bend" of the motherboard chip's pins.
Then use a DIP jumper to get the signal(s) to the daughter board.

2.  Solder some sort of header onto the desired pins.  A wire with the
appropriate connector for said header then carries the signal(s) to the
daugther board.  (Is there a type of header made for specifically this
purpose?)

Any and all ideas appreciated,

Rich Simoni
simoni@strat.stanford.edu


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