Phase selective track circuit apparatus

Details Phase selective track circuit apparatus Phase selective track circuit apparatus

B - Operations, Transporting

61

L

346/32

B61L 19/06 (2006.01) B61L 1/18 (2006.01)

Patent

CA 1055591

PHASE SELECTIVE TRACK CIRCUIT APPARATUS ABSTRACT OF THE DISCLOSURE A frequency selective filter is connected between the track transformer and phase selective unit at the receiving end of a coded phase selective track circuit to reject inter- fering signals of propulsion current frequency. The series L-C filter comprises a capacitor and a two-winding reactor coil with a resistor permanently connected in series between the two windings. Each winding is tapped to allow a selec- tion of the filter inductance to match track circuit imped- ance, including impedance bonds and ballast resistance. Taps for short track circuits includes the second winding and the resistor to improve signal to noise ratio. Energy for short inter- locking track circuits is of a higher frequency and a special tap on the first winding is selected to enable filter tuning at this other frequency for train detection since basic fre- quency is still used during code off-tie for cab signal con- trol.

252186

Affiliated with

Also associated with

Rating

Phase selective track circuit apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase selective track circuit apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase selective track circuit apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-16379