Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 238
THE ELECTRIC ARC. (From photograph taken through smoked glass.) Showing the positive carbon with its crater, and the lower negative carbon with its point. 234 ELECTRICAL ENGINEERING 235 … CLvrc* — 2>/tJ//-Pffr controlling the feeding of the carbons. One magnet is woundwith coarse wire and is connected in series with the arc, and the other magnet iswound with fine wireand connected in ashunt or by-path aroundthe arc. The seriesmagnet lifts the uppercarbon to start the arcwhen…
Electrical engineering
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