Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 619
nsystems. Coils can, however, be used to advantage on the line for the pro-tection of the more expensive translating devices. 606 LIGHTNING ARRESTERS. Tests made under actual working conditions indicate that for ordinarycommercial voltages effective protection is obtained with four choke coilsin… … Fig. 9. A. C. Choke Coil.
Electrical engineering
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