Device for indicating errors in a control line of an electric co

Details Device for indicating errors in a control line of an electric co Device for indicating errors in a control line of an electric co

1994-12-14

1996-12-24

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Instruments and devices for fault testing

324133, 324555, 340650, G01R 3102, G08B 1900

Patent

active

055876617

ABSTRACT:
An indicating device for electric control units has a light-emitting diode together with at least two resistors placed between a supply voltage and ground. A control line extends from the control unit and is connected between the two resistors. The control unit controls the potential on the control line in such a manner that when a defect is recognized an indication is provided. An indication is also provided in the event of a short circuit between the control line and the supply voltage, as well as upon an interruption in the control line.

REFERENCES:
patent: 4354182 (1982-10-01), Frey
patent: 5051732 (1991-09-01), Robitaille
"Line Tester With Computer Effect," Jul. 1979, Funkschau, Bd. 51, Nr. 15.

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