Selective grounding device for electronic equipment

Details Selective grounding device for electronic equipment Selective grounding device for electronic equipment

1989-03-07

1990-05-22

Desmond, Eugene F.

Electrical connectors

With circuit conductors and safety grounding provision

439 52, 439 97, 200507, H01R 466

Patent

active

049273671

ABSTRACT:
Selective grounding device for electronic equipment comprising a printed circuit board fastened to a grounding frame by a fastening screw inserted through an opening of the board comprising a first conductive pad surrounding the opening and located on the board side contacting the frame, a second and a third conductive pads, insulated from each other surrounding the opening on the opposite side of the board, the second pad being electrically connected to the first one, the third pad being electrically connected to the DC ground of the equipment, a washer selectively conductive or insulating, overlaying the second and third pad and clamped on said pads by the fastening screw, so that the DC ground is selectively connected or insulated form the frame ground depending on the washer being conductive or insulating, without need to differentiate, to this purpose, the printed circuit board.

REFERENCES:
patent: 2854552 (1958-09-01), Gouverneur
"Programmable Through-Hole Connection", Glasson et al., Western Electric Tech. Dig. No. 20, 10-1970, pp. 33-34.

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