18 pages matching type of speaker in this book
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Types of alternatingcurrent sets
Conversion of d c set to one using a c tubes
2 other sections not shown
226 type tube air gap alternating current alternating-current sets alternating-current tubes ampere amplifier antenna armature audio stages audio tube battery broadcasting capacity cathode cause center tap chassis choke coil connected core current passed detector stage detector tube direct current direct-current tubes dynamic speaker electrical electrons eliminate emitted enameled wire filament circuit filament element filament supply filament terminals filament winding full-wave rectifier grid bias grid circuit grid return heat heater type Heterodyning high voltage winding inductance meter neutrodyne obtained Ohm's law ohms operate oscillator output plate circuit plate current plate element plate supply plate voltage potentiometer power transformer power tube power unit radio frequency rectifier tube resistance resistor rheostat schematic diagram secondary coil secondary winding shield grid tube shown in Fig signal socket Speaker Unit station superheterodyne supply units thermionic tuning turns type of speaker type of tube vacuum tube voice coil voltage divider voltage divider circuit volts waves