Editing Neutral direct-current telegraph system

{{notability|date=July 2020}}

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 (telecommunications)|transmission]] of signals over a [[line (electrical engineering)|line]], and (b) the direction of current flow ([[electric polarity]]) is immaterial.<ref>{{Citation|last=Weik|first=Martin H.|title=neutral direct-current telegraph system|date=2001|work=Computer Science and Communications Dictionary|pages=1096|editor-last=Weik|editor-first=Martin H.|place=Boston, MA|publisher=Springer US|language=en|doi=10.1007/1-4020-0613-6_12302|isbn=978-1-4020-0613-5}}</ref>

==See also==
{{Portal|Electronics|Energy}}

==References==
{{reflist}}
{{FS1037C MS188}}

[[Category:Telegraphy]]


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