Browse Prior Art Database

Printed Circuit Board Probe

IP.com Disclosure Number: IPCOM000121405D
Original Publication Date: 1991-Aug-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 1 page(s) / 43K

Publishing Venue

IBM

Related People

Evans, RT: AUTHOR [+3]

Abstract

Disclosed is a probe device which permits electrical contact with high density printed circuit board wiring patterns.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Printed Circuit Board Probe

      Disclosed is a probe device which permits electrical contact
with high density printed circuit board wiring patterns.

      The probe is constructed using a printed circuit element 3
which provides the base for soldering attachment of a spring- loaded
signal contact 8, redundant spring-loaded ground contacts, 9, chip
resistor 7 and a sub-assembly of coaxial connector 5 attached to a
short length of semi-rigid coax 6.

      Registration holes 11 match posts and holes in outer plastic
housings 4 which protect the above printed circuit assemblege in a
sandwich fashion.

      A template 2 configured with a pattern of holes is mechanically
held a short distance from the board 1 to be tested.  The printed
circuit assemblege has a slot 13 which allows flexing during probe
insertion for a locking post 10 to retain it in a positive fashion.
Ground contacts 9 engage a tinned ground plane on the template
surface.

      The resistor chip 7 located close to the probe point improves
performance by lowering capacitive and inductive elements.  The
semi-rigid coax 6 provides noise protection on the probe while the
coax connector 5 permits variations of cable types and sizes to be
interfaced.  The dual probes 9 provide redundant ground paths.

      Disclosed anonymously.