An Experimental Course in the Fundamental Principles of Radio |
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A.C. mains accumulator adjusted aerial alternating current ammeter amplifier anode circuit anode current anode load anode voltage applied audio-frequency C₁ C₂ calculated calibration capacitance charged choke circuit is shown coil compass needle components connected constant coupling curve deflexion diode direction effect Experiment filament fixed frequency galvanometer give grid bias grid current grid voltage H.T. battery H.T. supply H.T. voltage heterodyne increased inductance input instrument iron kc/s L₁ lamp lines of force loop magnetic field maximum measured METAL RECTIFIER milliammeter modulated mutual conductance negative neon lamp observed obtained Ohm's Law oscillograph Osram output voltage parallel plates plotted pole potential divider R.F. oscillator R₁ R₂ range ratio reactance reading rectifier resistance resonance rheostat screen voltage secondary shown in Fig signal suitable switch taken tapping terminals tetrode transformer triode tuned circuit tuned-anode turns uF condenser V₁ V₂ valve voltmeter volts waveform wavemeter wire