Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 380
s, silk mills, dye houses, etc., where adiffused white light is essential. ELECTRIC LIGHTING 2,471 Special Forms of Arc Lamp.—The more important of thespecial forms of arc lamp designed for various purposes are thefocusing lamps and the search lights. Focusing lamps are made in both the automatic… … Pigs. 3,396 and 3,397.—Special arc lamps. Fig. 3,396, automatic focusing arc lamp for directcurrent only; fig. 3,397, hand feed arc lamp for lantern work adjusted for alternatingcurrent. These lamps give from 2,000 to 3,000 candle power with a consumption of from10 to 15 amperes of current. On…
Electrical engineering
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