A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 76
rbon touches theplates. Rheostats, or resistances, have beenmade by the use of a number of carbon buttons ordiscs piled one on another and placed in a glasstube. Discs of carbonized cloth form excellentresistances ior such purposes. Button, Press A push button. (See Button, Push) Button, Push A…
Electricity · Electrical engineering
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