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Table des matières
Principles of Telephony Section Page | 1 |
Properties of Telephone Circuits | 1 |
Telephone Apparatus Section Page | 2 |
Droits d'auteur | |
10 autres sections non affichées
Expressions et termes fréquents
active electromotive force adjustment alternating current ampere apparatus armature battery bell binding posts brass bridging bridging instrument cable called capacity carbon cause central-energy common-return condenser conductor connected copper wire cord circuit core cross-talk curve diameter diaphragm direct current direction distance drop Electric electrode electromagnet exchange extension bell fastened frequency fuse ground heat coil hook switch inch induction coil inserted instrument insulated iron jack lamp length lever line circuit line wire lines of force load coils metallic circuit microfarad mile mounted number of lines number of turns ohms operator operator's ordinary pass permanent magnet placed plate plug pole pieces position primary produced receiver relay repeating coil resistance ringer ringing screw secured self-induction shell short circuit shown in Fig shutter side signal sleeve soldered spool spring subscriber subscriber's switchboard tele telephone circuit telephone line terminals thimble tion transmission transmitter transposition usually vibration wave wound