Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1988-05-19
1990-11-06
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324509, 324522, 324127, 361 93, G01R 3102
Patent
active
049689444
ABSTRACT:
Apparatus for detecting and indicating malfunctions of single electrical device in a group of electrical devices. The apparatus comprises an inductor connected to a common output of a group of electrical devices for providing an input signal corresponding to electrical energy in the group of electrical devices, a comparator connected to the inductor and receiving the input signal therefrom, the comparator functions to provide a default signal when at least one of the electrical devices malfunctions, a detector connected to the comparator for receiving the default signal therefrom, a timer connected to the comparator and the detector, the timer being actuated upon receipt of the default signal from the comparator and functioning to provide a timer signal to the detector means a predetermined time thereafter, and an indicator connected to the detector and being operated in response to an enable signal received therefrom. The detector povides the enable signal to the indicator only when it receives the default signal from the comparator simultaneously with the timer signal from the timer.
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Information Data Packet from Smith Research & Technology, Inc., Mar. 1988.
Jawernycky Ronald G.
Lowenstein Michael Z.
Zucker Myron
Carrier Joseph P.
Eisenzopf Reinhard J.
Mueller Robert W.
Myron Zucker, Inc.
Petrik Robert M.
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