Electrical system monitoring means

Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids

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Details

361 90, 307360, 340660, H01H 4728

Patent

active

043062709

ABSTRACT:
An electrical system monitor is shown as employing a quad-chip C-MOS integrated circuit for sensing when the voltage of a monitored circuit, monitored sub-circuit, monitored branch circuit or monitored circuit portion deviates, by a preselected magnitude, from a selected magnitude of voltage; upon such deviation occurring, a related switch is actuated causing energization of sensory warning apparatus and, in another aspect of the invention, a switching device is actuated to open a related load circuit.
In a further embodiment the quad-chip C-MOS integrated circuit is, in the same general manner, responsive to sensing preselected deviations from a selected magnitude of current and, upon the occurrence thereof causing actuation of related switch means.

REFERENCES:
patent: 3311907 (1967-03-01), Teal
patent: 3320493 (1967-05-01), Culbertson
patent: 3341748 (1967-09-01), Kammiller
patent: 3579050 (1971-05-01), Basu et al.
patent: 3579223 (1971-05-01), McKaig
patent: 3657603 (1972-04-01), Adams
patent: 3900785 (1975-08-01), Alric et al.
patent: 3927399 (1975-12-01), Fuzzell
patent: 3932797 (1976-01-01), York
patent: 3940679 (1976-02-01), Brandwein et al.
patent: 3969635 (1976-07-01), Wilke
Jones, "Car Battery Monitor," Radio and Electronics Constructor, vol. 30, Feb. 1977, pp. 425-427.
Okolowicz, "Automotive Charging Regulator Gives Overvoltage and Undervoltage Warnings," Electronic Design, Mar. 15, 1976, p. 104.

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