Telephone Construction, Installation, Wiring, Operation and Maintenance: A Practical Reference Book and Guide for Electricians, Wiremen, Engineers, Contractors, Architects, and Others Interested in Standard Telephone Practice...N. W. Henley publishing Company, 1908 - 171 стор. |
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Сторінка 30
... talking apparatus already con- sidered there must be at each point where a tele- phone equipment is located , some means of signaling , so that a person A may know when a distant party B wishes to converse with him over the wire , and ...
... talking apparatus already con- sidered there must be at each point where a tele- phone equipment is located , some means of signaling , so that a person A may know when a distant party B wishes to converse with him over the wire , and ...
Сторінка 37
... Talking and Signaling Ap- paratus . Telephone apparatus must always be connected so that the following conditions are satisfied : ( 1 ) When the talking circuit is not in use , the bell must be connected so as to receive FIG . 27. - The ...
... Talking and Signaling Ap- paratus . Telephone apparatus must always be connected so that the following conditions are satisfied : ( 1 ) When the talking circuit is not in use , the bell must be connected so as to receive FIG . 27. - The ...
Сторінка 38
... talking circuit is not in use , the battery circuit must be opened . It is possible to satisfy these conditions with the sig- naling apparatus either in series with the line or bridged across it . The Series Connection is shown in Fig ...
... talking circuit is not in use , the battery circuit must be opened . It is possible to satisfy these conditions with the sig- naling apparatus either in series with the line or bridged across it . The Series Connection is shown in Fig ...
Сторінка 45
... resistance through a station . when the talking circuit is not in use . If the re- sistance of the bell windings is small , a number. FIG . 33. - Lightning Arrester FIG . 36. Porcelain Insulator for Interior Telephone Wiring. 45.
... resistance through a station . when the talking circuit is not in use . If the re- sistance of the bell windings is small , a number. FIG . 33. - Lightning Arrester FIG . 36. Porcelain Insulator for Interior Telephone Wiring. 45.
Сторінка 58
... talking current so as not to divert it from its proper course . The ringer coils are therefore wound to a high resistance , generally 1,000 or 1,600 ohms , that is , 500 or 800 ohms per coil , on comparatively long iron cores . As far ...
... talking current so as not to divert it from its proper course . The ringer coils are therefore wound to a high resistance , generally 1,000 or 1,600 ohms , that is , 500 or 800 ohms per coil , on comparatively long iron cores . As far ...
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Telephone Construction, Installation, Wiring, Operation and Maintenance: A ... Harry Cooke Cushing Попередній перегляд недоступний - 2017 |
Telephone Construction, Installation, Wiring, Operation and Maintenance: A ... Harry Cooke Cushing Попередній перегляд недоступний - 2018 |
Telephone Construction, Installation, Wiring, Operation and Maintenance: A ... Harry Cooke Cushing Попередній перегляд недоступний - 2018 |
Загальні терміни та фрази
50 cents alternating current ampere armature binding posts bolted Bridging Connection Bridging Station cable called carbon blocks clearing-out drop complete metallic circuit conductors Construction copper wire cord core cross-arms desk set diaphragm distributing board Dry Cell electrical electromotive force engines exchange switchboard extension bell fastened feet fuse gage ground heat coil hole hook switch inch induction coil insulated iron wire jack latter Leclanché cell lightning arrester line circuit line drop line wires listening key machine magneto bell mechanical mounted ohms operator party party-line systems placed plate plug pole porous cup position PRACTICAL BOOKS primary winding Protective Apparatus receiver ring the bell ringer ringing key rubber series station shown in Fig shows shunt side signaling sleeve soldered solid-back spring steel switch arm talking circuit talking current tele Telephone Circuit tested threads tion transmitter usually vibrations volts wall set wound zinc