Ballard, William Cyrus, Jr · New York [etc.] McGraw-Hill company, inc. · leaf 68
h the plate coil if a condenser isinserted in series with the plate coil to prevent it short-cir-cuiting the plate-voltage supply. In order to prevent thehigh-frequency current from passing through the generator VACUUM TUBE OSCILLATORS 45 rather than through the plate coil the by-pass… … Fig. 22.—Power tubes rated at 50; 250, and 5 watts output respectively. Inductive coupling is illustrated in Fig. 21 by the solidlined antenna circuit. This system offers advantages wherethe antenna system is of high resistance or where very shortwave-length transmission is desired. 46 .ELEMENTS OF…
Radio
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