Ballard, William Cyrus, Jr · New York [etc.] McGraw-Hill company, inc. · leaf 112
Fig.. 43.—^Single-stage audio frequency amplifier. /I* S- … 6volfs 20-100 volts Fig. 44.—Three-stage audio-frequency amplifier. 88 ELEMENTS OF RADIO TELEPHONY telephones in the plate circuit of the second tube. A three-stage amplifier is shown in Fig. 44 in which the same filamentand plate batteries are used for all three tubes. The use ofmore than three…
Radio
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