Testing apparatus for plated through-holes on printed circuit bo

Details Testing apparatus for plated through-holes on printed circuit bo Testing apparatus for plated through-holes on printed circuit bo

1984-05-17

1987-06-23

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158F, 324 73PC, G01R 102

Patent

active

046756000

ABSTRACT:
A testing device for testing the quality of through-hole plating of a printed circuit board employs probes having pyramidical tips, with the edge of the probe tips contacting the ends of the through-hole plating. The probe edges are insulated from each other, so that the device can easily carry out Kelvin four-point testing. Because contact is needed only at the probe edges, lighter force can be applied to the probes, and plating damage can be avoided. The device also is constructed to avoid interference from stray varying magnetic fields. This is done by keeping the area of a voltage loop between the probes as small as possible, by use of ferromagnetic members to divert stray fields to the outside of the loop, and by use of a dual-slope integrating analog to digital converter.

REFERENCES:
patent: 2142619 (1939-01-01), Sciaky
patent: 2399018 (1946-04-01), Greenslade
patent: 2440044 (1948-04-01), Greenslade
patent: 2782364 (1957-02-01), Shuler, Jr. et al.
patent: 3466539 (1969-09-01), Pitts et al.
patent: 3766470 (1973-10-01), Hay et al.
patent: 3885215 (1975-05-01), Weinstock
patent: 3893233 (1975-07-01), Glover
patent: 4042880 (1977-08-01), Weinstock
patent: 4245189 (1981-01-01), Wahl et al.

Affiliated with

Also associated with

Rating

Testing apparatus for plated through-holes on printed circuit bo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Testing apparatus for plated through-holes on printed circuit bo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing apparatus for plated through-holes on printed circuit bo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-723814