Wireless Servicing Manual |
Common terms and phrases
a.g.c. diode a.g.c. system adjusted aerial amplitude distortion anode circuit anode current anode voltage bias resistor C₁ C₂ capacitance cathode cause chassis choke class AB coil common connected coupling decoupling decoupling capacitor defect detector eeeee 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 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 R₁ R₂ reactance receiver reduce resistance resistor response screen secondary short-circuit short-wave shown in Fig signal speaker station superheterodyne switch test oscillator time-base trimmer triode tuned circuit tuning control usually V₁ voltmeter whistle wiring