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 21
Сторінка iii
... protecting them from lighting and abnormal currents ; their connection together for opera- tion as series or bridging stations ; and rules for their inspection and maintenance . Line wiring , and the wiring and operation of special ...
... protecting them from lighting and abnormal currents ; their connection together for opera- tion as series or bridging stations ; and rules for their inspection and maintenance . Line wiring , and the wiring and operation of special ...
Сторінка 6
... protection from corrosion . The magnet is turned upon the screw a , which holds it to the case , until the pole faces are 2 inch distant from the diaphragm d . If there be a greater distance than this , the mag- netic effect will be too ...
... protection from corrosion . The magnet is turned upon the screw a , which holds it to the case , until the pole faces are 2 inch distant from the diaphragm d . If there be a greater distance than this , the mag- netic effect will be too ...
Сторінка 8
... protection to the diaphragm from pencils , etc. , which are some- times maliciously used to bend it out of shape . The Head Receiver is a simple modification of the bipolar hand receiver . It is designed chiefly for switchboard ...
... protection to the diaphragm from pencils , etc. , which are some- times maliciously used to bend it out of shape . The Head Receiver is a simple modification of the bipolar hand receiver . It is designed chiefly for switchboard ...
Сторінка 19
... protection from moisture . The Battery . - Telephone work for the purposes considered in this book requires the use of pri- mary batteries ; in other words , batteries in which zinc is consumed by chemical action to generate วร ...
... protection from moisture . The Battery . - Telephone work for the purposes considered in this book requires the use of pri- mary batteries ; in other words , batteries in which zinc is consumed by chemical action to generate วร ...
Сторінка 29
... protect it against corrosion from too direct contact with the earth . Grounded telephone circuits are not usually as satisfactory as complete metallic circuits , espe- cially in the vicinity of electric - light and railway lines , on ...
... protect it against corrosion from too direct contact with the earth . Grounded telephone circuits are not usually as satisfactory as complete metallic circuits , espe- cially in the vicinity of electric - light and railway lines , on ...
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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