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2 173 648

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C1

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IPC

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Application

99126640/28, 1999-12-16

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Start date

1999-12-16

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Actual filing date

1999-12-16

(45)

Published

2001-09-20

(72)

Inventor

Polevoj Ju.I.Jakovlev V.N.Tarasov E.M.Zvezdin I.N.Troshina M.V.

(73)

Holder

Samarskij Institut Inzhenerov Zheleznodorozhnogo Transporta

TRACK CIRCUIT Russian patent published in 2001 - IPC

Abstract RU 2173648 C1

FIELD: railway automatics, signalling and communication. SUBSTANCE: invention relates to phase-sensitive track circuits. The track circuit has a generator, insulating transformers, filters, resistors and AND gate. Introduced additionally into track circuit are two phase meters, amplifier, two comparators, two time delay units, NAND gate, multiplexer, trigger, direction contact relay and frequency divider. The latter is coupled with generator, phase meter, AND gate and amplifier connected to output of corresponding filter. EFFECT: improved reliability of operation at reduced insulation resistance. 2 dwg

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RU 2 173 648 C1

Authors

Polevoj Ju.I.

Jakovlev V.N.

Tarasov E.M.

Zvezdin I.N.

Troshina M.V.

Dates

2001-09-20—Published

1999-12-16—Filed

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