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Motion picture electricity (1914)
Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 159
152 MOTION PICTURE ELECTRICITY to twenty per cent, more amperes when used on a. c. Thisis providing the line voltage is the same for both currents.The increased current is due to the fact that the a. c. arcgives best results at 35 volts as compared with the d. c.arc at 50 volts. Single… … TO 110 V.LINE /^■n VOLT A< Fig. 89 -© NO.1 NO.2@-Motion picture theaters · Electric lighting
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