The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 391
o adjust the grid potential toa value where the plate current of the first tube is just reduced tozero. The output of the voltmeter tube contains a high resistanceof, say, 400,000 ohms, the grid and filament of the amplifier tubebeing connected to the ends of this resistance. The amplifier… … drops to zero. The corresponding grid potential is measuredwith the voltmeter V. This obtains when the current registeredby the galvanometer or microammeter in the output circuit of theamplifier tube is the value given by this tube for zero potentialon its grid. This can easily be tested by…
Telegraph, Wireless
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