Efficient computer input system for sensing status of high volta

Details Efficient computer input system for sensing status of high volta Efficient computer input system for sensing status of high volta

1981-11-04

1984-09-04

Brigance, Gerald L.

Communications: electrical

Condition responsive indicating system

Specific condition

340654, 340660, 340652, 323288, 323290, G08B 2100

Patent

active

044700415

ABSTRACT:
An apparatus is provided for sensing the state of high voltage contact inputs in a process control system. Lower voltage contact closure input modules cooperate with a reference bus and reference bus regulator to reduce the voltage drop across an input module when a pair of contacts is closed, thereby reducing the energy dissipated and heat created by the input module.

REFERENCES:
patent: 3346855 (1967-10-01), Bishop
patent: 3678344 (1972-07-01), Wedmore
patent: 4340852 (1982-07-01), Togneri

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