Wireless Servicing Manual |
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Page 56
... common impedance coupling and is usually quite easy to trace . A typical arrangement is shown in Fig . 7.1 , and the way in which the tuned circuits are completed forms one of the greatest danger points . If Each tuned circuit as a ...
... common impedance coupling and is usually quite easy to trace . A typical arrangement is shown in Fig . 7.1 , and the way in which the tuned circuits are completed forms one of the greatest danger points . If Each tuned circuit as a ...
Page 57
... common return lead to a decoupling capacitor may cause instability , and it is a wise plan to wire a receiver in such a way that no lead is included in more than one circuit except where experiment shows that the use of a common ...
... common return lead to a decoupling capacitor may cause instability , and it is a wise plan to wire a receiver in such a way that no lead is included in more than one circuit except where experiment shows that the use of a common ...
Page 64
... common value . In this last case it is also common to find chokes connected in series with the heater leads . Sometimes such chokes are wound on formers , but sometimes they are no more than a quarter - wavelength of connecting wire ...
... common value . In this last case it is also common to find chokes connected in series with the heater leads . Sometimes such chokes are wound on formers , but sometimes they are no more than a quarter - wavelength of connecting wire ...
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