A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 78
on 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 for such purposes. Button, Press A push button. (See Button, Pus/:.) Button, Push A…
Electricity · Electrical engineering
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