Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1442
ape shown in Fig. 666, the upper orpositive carbon assuming a cup shape, while the lower car-bon generally burns to a point. This cup shape formation Arc Lamps 1407 on the upper or positive carbon acts as a reflector to throwthe light downward. The positive carbon burns awayabout twice as fast as… … STARTINGRESISTANCE Fig. 667diagram of constant-current series arc lamp mechanism. wrong plugging of the switchboard. The lamps will nowburn upside down/ or, in other words, the bottom carbonwill be the positive one. In such a case, if let go, thecarbon holders of the lamp will be burned and the…
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