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 654
current, though flowing all thetime through the coils, would not close it. To effect the closing an increase THE STEARNS DUPLEX. 641 of battery, and therefore of current strength is necessary, so that the relay,instead of, as in the first instance, responding to alternating periods of nocurrent and… … THE QUADRUPLEX (one terminal)Fig. 6. at the east station (not shown) there is a differentially wound relay, M,the duplicate of relay M in the diagram, the tension of A\Those spring makesit unresponsive. But when all the battery is on, a condition which obtainswhen the key closes transmitter, T, the…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
