International Library of Technology · Scranton, International Textbook Co. · leaf 366
20-volt system, about 80 cells are used oneach side of the circuit, though the exact number of cellsdepends considerably on the range of voltage required tomeet special conditions. 64. Regulation of Batteries.—In order to fully chargethe cells, it is necessary to have a voltage somewhat higherthan… … § 17 ELECTRIC LIGHTING. 75 machines are generally used to supply current for lightingat the same time that they are charging the cells. In order,then, to raise the voltage on the battery, a booster isused when charging is going on. In lighting work, thebooster is not generally used for regulating…
Electrical engineering
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