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Underlying Electrical Theory
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adjusted alternating electromotive force amplifier amplitude antenna circuit audio frequency audio-frequency battery capacity carrier current characteristic curve charge choke coil circuit LC circuit of Fig component comprises condenser connected constant cuit current flowing current intensity damped decrease detector direct current direct-current direction elec electrons energy equal explained feed-back coupling fundamental frequency grid and filament grid and plate grid circuit grid potential grid voltage hence heterodyne high-frequency alternating current increases inductance LL'C loop low-frequency magnetic field maximum method modulated mutual conductance natural frequency negative resistance operating point oscilla oscillations oscillatory circuit output electromotive force phase plate and grid plate circuit plate current plate potential plate voltage plate-current positive potential difference produces quency radiation radio reactance received signals receiving circuit shown in Fig side-band spark gap stator telephone receivers three-electrode vacuum tube tion transformer transmitting station tuned undamped variations varying wave length wavemeter winding wire zero