29 pages matching tuning control in this book
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Test1ng Equ1pment i
The Interpretat1on of Meter Read1ngs
31 other sections not shown
a.g.c. diode a.g.c. system adjusted aerial amplitude distortion anode circuit anode current anode voltage applied bias resistor capacitance cathode cause chassis choke coil common connected coupling decoupling decoupling capacitor defect detector effect feedback filter frequency-changer gang capacitor grid bias grid circuit grid current grid leak h.t. supply harmonics heater i.f. amplifier i.f. valve impedance inductance input instability interference intermediate frequency kc/s leads loudspeaker mains hum maximum Mc/s medium waveband milliammeter mistuning modulation motor-boating mutual conductance necessary negative normal obtained occur ohmmeter operation oscillator circuit oscillator frequency oscilloscope output stage output transformer output valve parasitic oscillation pentode pick-up possible potentiometer primary push-pull push-pull amplifier r.f. stage reactance receiver reduce resistor response screen secondary short-circuit short-wave shown in Fig signal speaker station straight set superheterodyne switch television test oscillator time-base trimmer triode trouble tuned circuit tuning control usually variable capacitor voltmeter whistles wiring