Neutral direct-current telegraph system: Difference between revisions
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Latest revision as of 23:40, 15 September 2024
In telecommunications, 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 (electric polarity) is immaterial.<ref>Template:Citation</ref>