Radio for everybody; being a popular guide to practical radio-phone reception and transmission and to the dot-and-dash reception and transmission of the radio telegraph, for the layman who wants to apply radio for his pleasure and profit without going into the special theories and the intricacies of the art (1922)
Lescarboura, Austin C. (Austin Celestin), 1891- · New York, Scientific American publishing company [etc.] · leaf 316
namely, the fixedvoltage and the variable voltage types. The latter is rec-ommended, since it permits of regulating the plate voltageapplied to the vacuum tube, and this is a most importantconsideration with many vacuum tubes. The telephone receivers must be bought, and it is wellto invest in good… … Arrangement of dry cells in series-parallel, in order to obtain a steadier voltage and a longer life from the dry battery used with vacuum tubes. owner of such receivers may soon tire of them and askfor something better, only to find that his inexpensivereceivers have no market value and must…
Radio
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