In addition to the signal source and the receiver, the AC track circuit contains a pair of impedance bonds for each pair of insulated joints. An impedance bond is a ...
Most railroads use track circuits to determine which sections of track are
Impedance bonds are essentially centre-tapped coils, which offer low impedance to traction current at say 50 Hz, while offering high impedance to signalling ...
An impedance bond provides continuity between railroad, or transit, track circuits for AC & DC propulsion current and distribute propulsion between 2 rails.
A tuned circuit can be incorporated to enhance the impedance characteristics of the Bond for AC track circuits that are operated at the resonant frequency of this ...
Block and track circuit boundaries are defined by using impedance bonds, terminating receivers ...
and to confine the alternating-current signaling energy to its own track circuit.
Development and performance analysis of a novel impedance bond for railway track circuits. Abstract: The ZPW-2000 track circuit is the ...
On standard plain line track it is used as a jointless track circuit where 'tuned
electrical contacts between the impedance bond and railway tracks (from the return circuit of electric traction) was made. The laboratory ...