Device for monitoring a variable electric signal and a component

Details Device for monitoring a variable electric signal and a component Device for monitoring a variable electric signal and a component

1990-04-30

1991-07-16

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340660, 307360, G08B 2100

Patent

active

050328271

ABSTRACT:
A device is disclosed for controlling a variable electric signal. A first switch receives the monitored variable electric signal at its input. A second switch receives a first limit electrical signal for the monitored signal and a first minimum reference for the first limit electric signal. A third switch receives a second limit electric signal for the monitored signal and a second maximum limit reference for the limit electric signal. The first switch delivers at its output: the monitored signal when it is between the output signals of the second and third switches; the output signal of the second switch when the monitored signal is greater than the latter signal; and the output signal of the third switch when the monitored signal is less than the latter signal.

REFERENCES:
patent: 3683284 (1972-08-01), Mueller
patent: 3882406 (1975-05-01), Graves et al.
patent: 4105900 (1978-08-01), Martin et al.
patent: 4613770 (1986-09-01), Raab
Patent Abstracts of Japan, vol. 6, No. 70 (P-113)[948], May 6, 1982.

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