Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 248
the opposite currents induced by it in the lower circuit,which oppose and neutralize each other, as shown j 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 ametal case having a fnnnel-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 of…
Electricity
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