telegraph circuit

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• Telegraph sounder — A Telegraph sounder is a device which produces an audible sound when connected to an operating electrical telegraph. It is similar in form to a relay. When a current flows through the induction coil, the resulting magnetic field attracts an… …   Wikipedia

• Telegraph — Tel e*graph, n. [Gr. ? far, far off (cf. Lith. toli) + graph: cf. F. t[ e]l[ e]graphe. See {Graphic}.] An apparatus, or a process, for communicating intelligence rapidly between distant points, especially by means of preconcerted visible or… …   The Collaborative International Dictionary of English

• Telegraph cable — Telegraph Tel e*graph, n. [Gr. ? far, far off (cf. Lith. toli) + graph: cf. F. t[ e]l[ e]graphe. See {Graphic}.] An apparatus, or a process, for communicating intelligence rapidly between distant points, especially by means of preconcerted… …   The Collaborative International Dictionary of English

• Circuit switching — is a methodology of implementing a telecommunications network in which two network nodes establish a dedicated communications channel (circuit) through the network before the nodes may communicate. The circuit guarantees the full bandwidth of the …   Wikipedia

• telegraph — [tel′ə graf΄] n. [Fr télégraphe: see TELE & GRAPH: orig. used of a semaphore] 1. Obs. any signaling apparatus 2. an apparatus or system that converts a coded message into electric impulses and sends it to a distant receiver: originally, Morse… …   English World dictionary

• Circuit de Catalunya — Coordinates: 41°34′12″N 2°15′40″E / 41.57°N 2.26111°E / 41.57; 2.26111 …   Wikipedia

• Telegraph key — A straight key style of telegraph key J38 World War II era U.S. military model …   Wikipedia

• telegraph — n. & v. n. 1 a a system of or device for transmitting messages or signals to a distance esp. by making and breaking an electrical connection. b (attrib.) used in this system (telegraph pole; telegraph wire). 2 (in full telegraph board) a board… …   Useful english dictionary

• telegraph — /ˈtɛləgræf / (say teluhgraf), / graf/ (say grahf) noun 1. an apparatus, system, or process for transmitting messages or signals to a distance, especially by means of an electrical device consisting essentially of a transmitting or sending… …  

• telegraph key — noun key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed • Hypernyms: ↑key …   Useful english dictionary

• circuit grade —    The data carrying ability of a circuit measured in speed or type of signal, such as broadband, voicegrade, subvoice, and telegraph …   IT glossary of terms, acronyms and abbreviations