The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 371
ACUUM TUBE is then given by -(^r^ (37) Fig;. 207 shows the com])lete circuit as it can be used for com-paring detectors in practice. This circuit contains an amplifiertube connected to the output of the detectors. When the detectoris to be used in practice with an amphfier such a circuit is… … Fig. 207. receiver can be connected directly to the output of the detectoras shown in Fig. 206. To obtain a modulated high frequency testwave would ordinarily require a radio frequency oscillator, anaudio frequency oscillator and a modulator, but in comparingdetectors it is not necessary that the…
Telegraph, Wireless
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