Meadowcroft, Wm. H. (William Henry), b. 1853 · New York & London, Harper & brothers · leaf 66
t the otherside of this mouthpiece is placed a diaphragmmade of a thin piece of metal, which is heldin place by a light spring. Behind this dia-phragm, and very close to it, is placed a car-bon button. Between this carbon buttonand the diaphragm is a small piece of plati-num, which is placed so as… … Fig. 13 to the carbon button is connected with thebattery to which the other wire of the pri-mary is connected. This is all shown in thesketch of a transmitter. (Fig. 13.) A is the mouthpiece; B, the diaphragm;C, the carbon button; D, the wire at the 4 49 A-B-C OF ELECTRICITY end of which is the…
Electricity
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