Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 218
Figure 140 Figures 140 and 141 show methods of controllingalternating current arcs operating in series. In Fig- … •N Figure 141 Tire 140 the weight W balances the two cores of thecoils M. When a current passes through these coilsthey draw in the cores and in so doing increase the Arc Lamps 215 reactance of the circuit. This in turn cuts down thecurrent. In the above manner the device automatic-ally regulates…
Electrical engineering · Electric testing
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