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It was stipulated that five cells, weighing in all 244 lb., should give out 120 ampere-hours of electric intensity; and that at the conclusion of the test there should remain a voltage of 1·7 volt per cell. Very great improvements in the construction of electric accumulators are to be looked for in the near future.
J. W. Lieb wrote from Milan, Italy, that he had in use on the Edison system there 360 meters ranging from 350 ampere-hours per month up to 30,000.
This is made to take care of a 10 volt current and it costs $10.00. The Filament Storage Battery. This must develop 12 volts and one having an output of 40 ampere-hours costs about $25.00. The Protective Condenser. This condenser has a capacitance of 1 mfd. and costs $2.00. The Motor-Generator.
This is made to take care of a 10 volt current and it costs $10.00. The Filament Storage Battery. This must develop 12 volts and one having an output of 40 ampere-hours costs about $25.00. The Protective Condenser. This condenser has a capacitance of 1 mfd. and costs $2.00. The Motor-Generator.
This difference in weight is a very exact measure of the quantity of electricity, or number of ampere-hours, that have, so to speak, passed through the cell, and hence of the whole consumption in the circuit. The amount thus due from the customer is ascertained by removing the cell, washing and drying the plates, and weighing them in a chemical balance.
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