Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U.S. seacoast defenses (1902)
United States. War Dept, Anderson, George Lucius, 1849-1934 · Washington, Govt. Print. Off. · leaf 179
he latter attracts its armature end.A negative C makes the other A^-pole attract its armature end, and so on. Asthere is no spring to be overcome, a polarized relay is very sensitive and deservesattention on account of its importance in the service. For the magneto whichgenerates the alternating +…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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