Practical electricity .. with questions and answers (1911)
Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 222
le is prevented from vibrating back and forth on eachside of the point at which it will finailly come to rest. Thebobbin B is made of copper, and when it moves there will begenerated in it aurrents which, according to Lentzs law,tend 211 to prevent its motion. The mechanical momentum given tothe… … Figure 74 Western electric meter depending on effort of iron strip to get into as powerful fielA as possible, or to get as near to the wire carrying current as possible. In Fig. 72 is a sketch of the Weston di-rect current ammeter. The working parts are preciselythe same, the principle of operation…
Electricity
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