wire-break relay

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• Wire spring relay — A wire spring relay is a type of relay, primarily manufactured by the Western Electric Company for use by the Bell System in electromechanical telephone exchanges. It was licenced for use around the world, and was commonplace in Japan. A wire… …   Wikipedia

• Relay — This article is about the electrical component. For other uses, see Relay (disambiguation). Automotive style miniature relay, dust cover is taken off A relay is an electrically operated switch. Many relays use an electromagnet to operate a… …   Wikipedia

• World record progression 4x100 metres medley relay — The world record in the 4×100 metres medley swimming relay was first recognised in 1953[citation needed] by FINA, with world swimming governing body. Initially world records were only recognised in long course swimming pools which were a minimum… …   Wikipedia

• Copper wire and cable — Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the 1820s.[1][2] The invention of the telephone in 1876 proved to be another early boon for copper wire.[3] Today, despite competition from… …   Wikipedia

• Protective relay — See also: Power system protection In electrical engineering, a protective relay is a complex electromechanical apparatus, often with more than one coil, designed to calculate operating conditions on an electrical circuit and trip circuit breakers …   Wikipedia

• реле обрыва (контролируемой) цепи — — [Я.Н.Лугинский, М.С.Фези Жилинская, Ю.С.Кабиров. Англо русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.] Тематики электротехника, основные понятия EN wire break relay …   Справочник технического переводчика

• Bell Labs — Bell Laboratories (also known as Bell Labs and formerly known as AT T Bell Laboratories and Bell Telephone Laboratories) is the research organization of Alcatel Lucent and previously the American Telephone Telegraph Company (AT T). Bell… …   Wikipedia

• Dry contact — may mean any of the following in electronics: No current: Dry contact can refer to a secondary set of contacts of a relay circuit which does not make or break the primary current being controlled by the relay. Usually some other contacts or… …   Wikipedia

• TXE — TXE, which stands for Telephone eXchange Electronic, was the designation given to a family of telephone exchanges developed by the British General Post Office (GPO), now BT, designed to replace the ageing Strowger systems. When World War II ended …   Wikipedia

• Computers and Information Systems — ▪ 2009 Introduction Smartphone: The New Computer.       The market for the smartphone in reality a handheld computer for Web browsing, e mail, music, and video that was integrated with a cellular telephone continued to grow in 2008. According to… …   Universalium

• Track circuit — A track circuit is a simple electrical device used to detect the presence or absence of a train on rail tracks, used to inform signallers and control relevant signals. Principles and operation The basic principle behind the track circuit lies in… …   Wikipedia