Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 527
—Suppose we desireto measure currents of from one to i,ooo amperes. Thiswould require a set of five tangent galvanometers of differ-ent sizes, the three largest of which would be impracticable.(The diameter of the largest would be about seventy-fivefeet.) With the sine or cosine galvanometers or… … A a Fig. 2.^loreover, none of these could be used near dynamos andthis means that we must lead the whole of the current wewish to measure perhaps a considerable distance, thusentailing expense for wire and perhaps leakage. Suppose we make one shunt of resistance ooi w. If ofGerman silver 9 inches…
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