A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 455
main circuit, attracts its armatureA, and, compressing the pile of carbon plates C,lowers their resistance, thus diverting a propor-tionally larger portion of the current from thefield magnet coils F M, and maintaining the cur-rent practically constant. In some machines the same thing is done… … Fig. 475. The Brush Regulator. This resistance may be adjusted either auto-matically by an electro-magnet whose coils arein an independent shunt across the mains, or maybe operated by hand. In Fig. 476, the variable resistance is shownat R, the lever switch being in this case operatedby hand…
Electricity · Electrical engineering
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