International Library of Technology · Scranton, International Textbook Co. · leaf 243
the other.At the end of a certain fixed time (usually thirty days) thejars and their contents are replaced by others, and the am-pere-hours of current that have been used by the customercalculated from the gain in weight of the negative plate.By various ingenious devices in the several parts of… … Fig. 1026. 1026 gives a view of the latest type of Edison chemicalmeter. CARDEIV VOLTMETER. 2541. The representative instrument of the class thatmeasures the heating effect of the current is the Cardewvoltmeter, illustrated in Fig. 1027. In this instrument a long wire w, usually of some…
Electrical engineering
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