Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With mating connector which receives panel circuit edge
Patent
1993-11-03
1995-06-06
Ramsey, Kenneth J.
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With mating connector which receives panel circuit edge
439218, 439633, 439680, H01R 909
Patent
active
054217342
ABSTRACT:
The present invention provides an apparatus for evolving a 5 volt V.sub.cc signaling environment to a 3.3 volt V.sub.cc signaling environment. A 5 volt bus connector and a 3.3 volt bus connector are provided with a key disposed at different locations on the respective connectors. A 5 volt circuit board, populated with components compatible with 5 volt signaling environment, includes a mating key designed to receive the key of the 5 volt connector. A 3.3 volt circuit board, populated with components compatible with 3.3 volt signaling environment, includes a mating key designed to receive the key of the 3.3 volt connector. Accordingly, the 5 volt circuit board may only be inserted into the 5 volt connector, and the 3.3 volt circuit board may only be inserted into the 3.3 volt connector. A universal dual voltage board is provided which may be populated with components compatible with either 5 volt or 3.3 volt signaling environment. The universal dual voltage board includes mating keys designed to receive both the keys for the 5 and 3.3 volt circuit, and as such, may be inserted into either the 5 or 3.3 volt connector. The universal dual voltage board also includes special I/O power metal contacts which mate with the special I/O power pins in either the 5 or 3.3 volt connector so that the universal dual voltage can be adapted to the signaling environment of the connector. A method is also provided to evolve a 5 volt V.sub.cc bus into a 3.3 volt V.sub.cc bus without rendering the existing 5 volt V.sub.cc bus systems incompatible.
REFERENCES:
patent: 3566340 (1971-02-01), Jayne et al.
patent: 3818280 (1974-06-01), Smith et al.
patent: 4368942 (1983-01-01), Mathe et al.
patent: 5277611 (1994-01-01), Berek et al.
Intel Corporation
Ramsey Kenneth J.
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