Diagnostic protection circuit and method using tri-state control

Excavating

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324 73R, 371 20, G06F 1100, G01R 3128

Patent

active

046126384

ABSTRACT:
A circuit and method, for use with an electronically controlled load network for diagnosing short-circuit and open-circuit conditions and for protecting loads affected by those conditions by using positive feedback in cooperation with a microprocessor controlled tri-state input/output port pin.

REFERENCES:
patent: 4194113 (1980-03-01), Fulks
patent: 4300085 (1981-11-01), Monma
patent: 4414863 (1983-11-01), Heino
patent: 4449058 (1984-05-01), Feldmann
patent: 4516076 (1985-05-01), Pillari

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