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 612
Pig. 22. The Circuits of a ReverseCurrent Circuit Breaker SetShowing How a Direct CurrentMotor is Used with AlternatingCurrents to Distinguish betweenPower Passing in One Directionand Power Passing in the OtherDirection in the Line. Fig. 23. The Circuits of a TimeElement Relay Circuit-break-ing…
Electrical engineering
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