Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 187
atteries for use in connection with bell ortelephone work are best connected for charging asshown in Figure 126, one battery being connected tothe work while the other is charging. This makes itimpossible to bring the high voltage dynamo currentin contact with the bell wiring which, as a rule, is… … Figure 127 Figure 128 Figures 127 and 128 illustrate other uses for stor-age batteries. These figures show the elementaryconnections of batteries used in a manner similar tocompensators. It is here made possible by their use toobtain two voltages from one dynamo. There are so many different types…
Electrical engineering · Electric testing
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