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American telephone practice (1905)

Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 121

An illustration from American telephone practice, 1905, leaf 121
r and carfare for four renewals, where only one wouldbe necessary with the better cell. Frequently battery tests are made by simply short-circuiting thecell for a given period, or by closing its circuit permanently througha certain resistance and noting the time taken for a cell to com-pletely… … MILU./IMHETER IMJJ l/ VOLTMETER m> FIG. 74,—METHOD OF TESTING PRIMARY BATTERIES. cells designed for open-circuit work only being thus tested underthe conditions of work that would be given to a closed-circuit cell. In Fig. 74 is shown in diagram a method of making comparativebattery tests which…

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