Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 189
andle in the oppositedirection from that which produces forward motion. The diagramshows four forward positions of the master controller—two eachon series and parallel—and two reverse positions. A much greater use of the interlock principle is used in theautomatic control and it is upon this… … Fig. 66. Diagram of Interloclcs, Sprague-General Electric Automatic Control plained. The number of these at first appears confusing but, asthe same general principle underlies the operation of them all, thiscomplexity is only apparent. The operating principle of the automatic acceleration will…
Electrical engineering
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