Circuit arrangement for a track circuit with multiple signal sou

Details Circuit arrangement for a track circuit with multiple signal sou Circuit arrangement for a track circuit with multiple signal sou

1981-04-03

1983-07-12

Robinson, Thomas A.

Railway switches and signals

Block-signal systems

Automatic

246 63R, B61L 2106

Patent

active

043926258

ABSTRACT:
A track circuit is disclosed and includes rails which are fed from a main signal transmitter and which rails, at an information point a required distance from the transmitter, are shunted by a cross impedance, with which impedance, with respect to the track of the main signal, an additional transmitter of an auxiliary signal and a main receiver for receiving signals from the main and additional transmitter are serially connected. A signal indicating a free track is obtained if the main receiver is energized.

REFERENCES:
patent: Re27472 (1972-09-01), Thorne-Booth
patent: 3327111 (1967-06-01), Frech et al.
patent: 3840737 (1974-10-01), Hoyler
patent: 4304377 (1981-12-01), Pitard

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