Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U. S. seacoast defenses .. (1904)
United States. War Dept · Washington, Govt. print. off. · leaf 62
y varying the resistance of a coil inseries with it. The comiiound winding uses both methods of regulation. (B) SPECIAL SERVICE GEIS^ERATORS. I. The telephone call box dynamo (fig. 60) hasthree permanent magnets M to create its field.The single Siemens armature coil C, of fine wire,has one end…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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