DEVICE TO PROTECT OPERATION OF AUTOMATIC LOCOMOTIVE ALARM DEVICES AGAINST POWER TRANSMISSION LINE NOISE Russian patent published in 2012 - IPC B61L25/02 

FIELD: electricity.

SUBSTANCE: device comprises a plus and minus poles of the first source of supply, a compliance relay, front contacts of code presence relay, the third counter, a green light relay, a red-yellow light relay, a resistor, a capacitor, a contact of a pulse relay. The device is additionally equipped with a reverse follower of a pulse relay, a spark-quenching diode, a spark-quenching resistor, a plus pole of the second source of supply, a minus pole of the second source of supply, a contact of an axial track sensor, a contact of the reverse follower of the pulse relay, a counter, an amplifier, a protection disconnection relay, a contact of the reverse follower of the pulse relay, a contact of the protection disabling relay.

EFFECT: higher reliability of action of an automatic locomotive alarm.

1 dwg