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Choice and Types of Instruments
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adjusted aerial amplifier amplitude anode circuit anode current apparatus applied bias calibration capacitor capacity carrier wave cathode chassis coil components connected coupling deflection detector valve disconnected earth effect fault filament fixed condenser frequency frequency changer ganging give grid grid leak grid-bias H.F. choke H.F. valve H.T. battery heater indicate inductance input instrument insulation interference intermediate frequency kc/s L.F. stages leads mains hum mains transformer measure method microhenrys milliammeter necessary neon neon lamp normal obtained Ohm's Law ohmmeter ohms oscillator oscillograph output meter output valve panel pentode plates plug position possible potentiometer radio range reaction condenser reading receiver rectifier resistance resistor screen screening grid short short-circuit shown in Fig smoothing socket soldering speaker station suitable superhet supply switch terminal trace trimmer triode trouble tuned circuit tuning condenser valve-holder valve-voltmeter variable voltage voltmeter volts waveband waveform wavelength winding wire