A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 512
ts operation will be understood from aninspection of the drawing. Switch Pin.—(See Pin, Switch^ Switch, Plug A switch in which a metal plug is withdrawn to throw into a cir-cuit a coil or other device, the ends of whichare connected to metallic blocks that are suf-ficiently near together to be… … Fig. J 23. Pole-Changing Switch. If the two outer contacts are connected to thesame pole as the source, as, for example, thepositive, and the two intermediate contacts areconnected to the other pole, or to the negative,then in the position shown in the cut, the currentwill flow through any…
Electricity · Electrical engineering
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