Radio, miracle of the 20th century ... a story of human achievement that stands unrivalled in the history of humanity, together with a colorful portrayal, giving a broad, general view of the whole subject of wireless telegraph and telephone and its marvelous development (1922)
Drinker, Frederick E. [from old catalog], Lewis, James G., [from old catalog] joint author · [Philadelphia, Printed by National publishing co.] · leaf 237
ged in proximityto the primary in such a manner that the current or wavesare carried through it by inductance and not because ofdirect contact. Induction coils arranged side by side—one in the primary circuit, the other in the secondary—make such a hook-up operative. In a capacity coupling there… … EXAMPLE OF CAPACITY COUPLING. The simplest circuit of any considerable effectiveness isone which consists of the aerial, single or double slidetuning coil, crystal detector, condenser and head tele-phone receivers. It has been noted before, but is worthrepeating that such a set cannot be used with…
Radio
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