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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Результати 1-5 із 15
Сторінка iii
... Gives the principles of construction and operation of telephone instruments ; approved methods of installing and wiring them ; the means of protecting them from lighting and abnormal currents ; their connection together for opera- tion ...
... Gives the principles of construction and operation of telephone instruments ; approved methods of installing and wiring them ; the means of protecting them from lighting and abnormal currents ; their connection together for opera- tion ...
Сторінка 16
... give but little trouble by caking or " pack- ing " because they do not become much heated by the current , owing to there being space above and below the locks in which they can expand ; the transmitter case is very small ; and the ...
... give but little trouble by caking or " pack- ing " because they do not become much heated by the current , owing to there being space above and below the locks in which they can expand ; the transmitter case is very small ; and the ...
Сторінка 32
... gives a much higher voltage than is usual in the battery , with no trouble from acids and with less cost of operation ; the generator and bell being always on closed circuit , there are also fewer contacts to burn , oxidize , or in ...
... gives a much higher voltage than is usual in the battery , with no trouble from acids and with less cost of operation ; the generator and bell being always on closed circuit , there are also fewer contacts to burn , oxidize , or in ...
Сторінка 55
... give a certain number of rings throughout all the bells , ringing once to signal one station , twice to signal another , and so on according to a predetermined code . The party he wishes , recognizing the number of rings as cor ...
... give a certain number of rings throughout all the bells , ringing once to signal one station , twice to signal another , and so on according to a predetermined code . The party he wishes , recognizing the number of rings as cor ...
Сторінка 75
... give a weak transmission . Packing of the carbon granules can usually be overcome temporarily by lightly tapping the side of the transmitter , and permanently by using not more than two Fuller cells in series or their equivalent in the ...
... give a weak transmission . Packing of the carbon granules can usually be overcome temporarily by lightly tapping the side of the transmitter , and permanently by using not more than two Fuller cells in series or their equivalent in the ...
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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 |
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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