plural of electronic circuit

To travel between small towns on horseback, usually to preach or preside over courts of law.

plural of circuit rider

The equivalent of an additional electrical circuit or wire, in reality not existing, obtained by certain arrangements of real circuits, as in some multiplex telegraph systems.

plural of phantom circuit

(rail transport) an electrical circuit in a railway track used for signalling purposes.

plural of track circuit

(mathematics) The number of independent cycles in a graph

(graph theory) an Eulerian trail that begins and ends at the same node

The circuit of the local battery.