Electricity for everybody; its nature and uses explained (1895)
Atkinson, Philip · New York, The Century Co. · leaf 241
f the opposite currents induced by it in the lower circuit,which oppose and neutralize each other, as shown; thebattery current in the lower circuit producing a similarinductive effect in the upper circuit, which it is notnecessary to show. Long distance lines are constructed with much heavierwire… … Fig. 100. The Solid Back Transmitter.—The construction ofthis transmitter is shown in Fig. 100. It is made with aLi etal case having a funnel-shapedmouth-piece in front, which termin-ates in an opening opposite the cen-ter of a diaphragm a a, similar tothat used in the Blake transmitter.Just back…
Electricity
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