Neutral direct-current telegraph system
Encyclopedia
In telecommunication
, a neutral direct-current telegraph system (single-current system, single-current transmission system, single-Morse system) is a telegraph system
in which (a) current flows during marking intervals and no current flows during spacing intervals for the transmission
of signals over a line
, and (b) the direction of current flow is immaterial.
Telecommunication
Telecommunication is the transmission of information over significant distances to communicate. In earlier times, telecommunications involved the use of visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs, or audio messages via coded...
, a neutral direct-current telegraph system (single-current system, single-current transmission system, single-Morse system) is a telegraph system
System
System is a set of interacting or interdependent components forming an integrated whole....
in which (a) current flows during marking intervals and no current flows during spacing intervals for the transmission
Transmission (telecommunications)
Transmission, in telecommunications, is the process of sending, propagating and receiving an analogue or digital information signal over a physical point-to-point or point-to-multipoint transmission medium, either wired, optical fiber or wireless...
of signals over a line
Line (electrical engineering)
In electrical engineering, a line is, more generally, any circuit of an electrical system. This electric circuit loop , consists of electrical elements connected directly by conductor terminals to other devices in series....
, and (b) the direction of current flow is immaterial.