Logic board interlock indication apparatus

Electrical transmission or interconnection systems – Miscellaneous systems

Patent

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Details

324 51, 361189, 340256, H02J 1300

Patent

active

040428320

ABSTRACT:
A plurality of logic boards coupled together over a common electrical bus by use of a plurality of connectors, at least one per board, which includes at least one pair of terminals for coupling an interlock signal wire which is daisy chained through each of such boards and connectors. By providing a known signal state on the interlock signal wire at one end of the bus, an improper connection or an error condition in one of the logic boards will be indicated by a sensor, which may be included at the last logic board, if the known signal state is not received at the sensor.

REFERENCES:
patent: 3191095 (1965-06-01), Hefti
patent: 3691399 (1972-09-01), Vinch et al.

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