INDICATOR FOR ELECTRIC CONTROL DEVICE

PURPOSE: To provide an indication device which can be fabricated simply at a low cost by connecting a light emitting diode between a feeder voltage source and the ground through voltage dividers, and connecting a control wire between two resistors being voltage dividers. CONSTITUTION: A series circu...

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Bibliographische Detailangaben
Hauptverfasser:	MIHIYAERU BUARUTAA, TOOMASU SHIYUNAIDAA, SHIYUTEFUAN GURIIZAA SHIYUMITSUTSU
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TARIFF METERING APPARATUS TESTING TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE: To provide an indication device which can be fabricated simply at a low cost by connecting a light emitting diode between a feeder voltage source and the ground through voltage dividers, and connecting a control wire between two resistors being voltage dividers. CONSTITUTION: A series circuit consisting of resistors R1 and R2 and a light emitting diode D1 forms an optical indication device OA and is connected between a feeder voltage source Uz and the ground. A control lead AL is interposed between the resistors R1 and R2 and connected with a control device S on the other side. The control lead AL is connected with the collector of a transistor T in the control device S, and the emitter of the transistor is connected with the ground. The base potential of the transistor T is controlled by the control device S, and the diode D1 emits light when a failure is generated as sensed by the control device S. Because the current flows to the ground via the resistors R1, R2 and diode D1, the diode D1 emits light in the same manner even when the control lead AL goes in severance.