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. |
З цієї книги
Результати 1-5 із 46
Сторінка 2
... resistance to them than the surround- ing air , many lines will traverse the diaphragm in completing their circuits outside the magnet . If , now , the diaphragm be vibrated slightly to and from the end of the magnet , there will be pro ...
... resistance to them than the surround- ing air , many lines will traverse the diaphragm in completing their circuits outside the magnet . If , now , the diaphragm be vibrated slightly to and from the end of the magnet , there will be pro ...
Сторінка 4
... resistance of 75 ohms , and its terminals are connected to the binding posts m and o by No. 18 or 20 B. & S. gage cotton - covered copper wire which is soldered to them . The mag- net should have sufficient power to hold a weight of 16 ...
... resistance of 75 ohms , and its terminals are connected to the binding posts m and o by No. 18 or 20 B. & S. gage cotton - covered copper wire which is soldered to them . The mag- net should have sufficient power to hold a weight of 16 ...
Сторінка 5
... . - Method of Winding the Magnets for a Double- Pole Receiver nected in series and are wound in opposite direc- tions as in Fig . 4 , with No. 36 or 38 B. & S. gage silk - covered copper wire to a resistance depending 5.
... . - Method of Winding the Magnets for a Double- Pole Receiver nected in series and are wound in opposite direc- tions as in Fig . 4 , with No. 36 or 38 B. & S. gage silk - covered copper wire to a resistance depending 5.
Сторінка 6
... resistance depending upon the conditions of service . For local battery work , such as book , the resistance of the considered in this receiver is usually from 100 to 125 ohms ( see Appendix ) divided equally between the two coils ...
... resistance depending upon the conditions of service . For local battery work , such as book , the resistance of the considered in this receiver is usually from 100 to 125 ohms ( see Appendix ) divided equally between the two coils ...
Сторінка 10
... resistance according to the mechanical pressure brought to bear upon it . Under high pressure the resistance of carbon is low , but under a low pressure its resistance is comparatively high . If , therefore , at the transmitting end of ...
... resistance according to the mechanical pressure brought to bear upon it . Under high pressure the resistance of carbon is low , but under a low pressure its resistance is comparatively high . If , therefore , at the transmitting end of ...
Інші видання - Показати все
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