A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 261
ential A gal-vanometer containing two coils so wound asto tend to deflect the needle in oppositedirections. The needle of a differential galvanometer showsno deflection when two equal currents are sentthrough the coils in opposite directions, since,under these conditions, each coil neutralizes… … Fig, 273. Differential Galva-nometer. of Merit of A form of differential galvanometer is shown inFig. 273. Sometimes the current is so sent through thetwo coils, that eachcoil deflects the nee-dle in the same di-rection. In this casethe instrument is nolonger differential inaction. If the…
Electricity · Electrical engineering
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