. Electrical world. FIG. 46.—DOUBLE DIAPHRAGM TRANSMITTER,MODEL 2. (full SIZE.) The most common form of electrodes is a fiat carbon plate, rang-ing from Yi in. to I in. in diameter, and from 1/16 in. to y% in. in ^^. Electrrides should be made of the hardest densest carbon;. FIG. 47.—FAHNESTOCK TRANSMITTER ASSEMBLED. standpoint, instruments of the double-diaphragm type would seemto present many possibilities of which inventors have not as yetfully availed themselves. The Design of the Microphone.—The essential part of the trans- riG. 48.—FAHNESTOCK TRANSMITTER DISSECTED. those which ar
. Electrical world. FIG. 46.—DOUBLE DIAPHRAGM TRANSMITTER,MODEL 2. (full SIZE.) The most common form of electrodes is a fiat carbon plate, rang-ing from Yi in. to I in. in diameter, and from 1/16 in. to y% in. in ^^. Electrrides should be made of the hardest densest carbon;. FIG. 47.—FAHNESTOCK TRANSMITTER ASSEMBLED. standpoint, instruments of the double-diaphragm type would seemto present many possibilities of which inventors have not as yetfully availed themselves. The Design of the Microphone.—The essential part of the trans- riG. 48.—FAHNESTOCK TRANSMITTER DISSECTED. those which are soft may be greatly improved by repeated boilings ina very dense solution of sugar, after each of which the carbon discshould be placed in a crucible covered with charcoal or carbon dustand heated to a bright red. Many other forms of electrodes have
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
