. Motion picture electricity. Fig. 79 sistance becomes very large, and as the arc requires thesame drop, namely, 50 volts, it is evident that about 500volts has to be consumed in the reducing and steadying d. c. 220 V. CONSTANT POTENTIAL. STEADYING AND REDUCINGRESISTANCES COMBINED -170 VOLTS Fig. 80 resistance. Fig. 81 illustrates such a connection andsystem. MOTION PICTURE ELECTRICITY 139 Arc Voltage Limit.—It would seem that where theline voltage is so high it would be practical to use ahigher voltage at the arc so as to employ some of theenergy to increase the illumination instead of wastin
. Motion picture electricity. Fig. 79 sistance becomes very large, and as the arc requires thesame drop, namely, 50 volts, it is evident that about 500volts has to be consumed in the reducing and steadying d. c. 220 V. CONSTANT POTENTIAL. STEADYING AND REDUCINGRESISTANCES COMBINED -170 VOLTS Fig. 80 resistance. Fig. 81 illustrates such a connection andsystem. MOTION PICTURE ELECTRICITY 139 Arc Voltage Limit.—It would seem that where theline voltage is so high it would be practical to use ahigher voltage at the arc so as to employ some of theenergy to increase the illumination instead of wasting itin the reducing resistance. Previous information on thissubject has made you acquainted with the fact that it isnot practical under any condition to use more than 60volts at the arc because at this point the arc begins toflame excessively. As a matter of fact, 55 volts is about STEADYINGAND REDUCINGRESISTANCES COMBINED=?500 VOLTS
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidmotionpictureele00hall
