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Portable Commutator
The Portable Commutator
Portable Commutator
was a telecommunications device that was used by the military[clarification needed] during World War I. It was manufactured by Northern Electric Company.See also[edit]Commutator (electric)References[edit]This article related to telecommunications is a stub
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Telecommunication
Telecommunication
Telecommunication
is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.[1][2] Telecommunication
Telecommunication
occurs when the exchange of information between communication participants includes the use of technology. It is transmitted either electrically over physiical media, such as cables, or via electromagnetic radiation.[3][4][5][6][7][8] Such transmission paths are often divided into communication channels which afford the advantages of multiplexing
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Commutator (electric)
A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine. Two or more electrical contacts called "brushes" made of a soft conductive material like carbon press against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings (coils of wire) on the armature are connected to the commutator segments. Commutators are used in direct current (DC) machines: dynamos (DC generators) and many DC motors as well as universal motors. In a motor the commutator applies electric current to the windings. By reversing the current direction in the rotating windings each half turn, a steady rotating force (torque) is produced
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Special
Special
Special
or specials may refer to:Contents1 Music 2 Film and television 3 Other uses 4 See alsoMusic[edit] Special
Special
(album), a 1992
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Northern Electric Company
Nortel
Nortel
Networks Corporation, formerly known as Northern Telecom Limited, Northern Electric and sometimes known simply as Nortel, was a multinational telecommunications and data networking equipment manufacturer headquartered in Mississauga, Ontario, Canada. It was founded in Montreal, Quebec
Quebec
in 1895 as the Northern Electric and Manufacturing Company
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Portable Commutator
The Portable Commutator
Portable Commutator
was a telecommunications device that was used by the military[clarification needed] during World War I. It was manufactured by Northern Electric Company.See also[edit]Commutator (electric)References[edit]This article related to telecommunications is a stub
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.