. Motion picture electricity. ?W:o ^ o C: i-^ ^ co U X>-^ o c no iu cv o 3,-o o 5. ^ rv v- ?II *>.- 3 ? Ex) vj. MOTION PICTURE ELECTRICITY 187 bon setting when the arc is properly controlled. I do notwant the reader to get the impression, however, that thevertical carbon setting can be used with all kinds of cur-rent controllers, because it cannot. The vertical carbonsetting was devised and recommended for use with theeconomizer only, and when used in combination withthis device, under proper voltage and cycles, thebest results that can possibly be obtained with a. c. atthe arc will be r
. Motion picture electricity. ?W:o ^ o C: i-^ ^ co U X>-^ o c no iu cv o 3,-o o 5. ^ rv v- ?II *>.- 3 ? Ex) vj. MOTION PICTURE ELECTRICITY 187 bon setting when the arc is properly controlled. I do notwant the reader to get the impression, however, that thevertical carbon setting can be used with all kinds of cur-rent controllers, because it cannot. The vertical carbonsetting was devised and recommended for use with theeconomizer only, and when used in combination withthis device, under proper voltage and cycles, thebest results that can possibly be obtained with a. c. atthe arc will be realized. In fact it is possible with thisequipment to equal a d. c. arc projection with the samenumber of watts taken from the line up to 30 ampered. c. arc. Fig. 107 is an exact reproduction of a 45-ampere alter-nating-current arc maintained between two carbons setat the angle universally adopted for direct and alternat-ing current projection with ordinary means of currentcontrol. Fig. 108 is an exact representation of the same electricarc looking into the front of the lamp house with thecondensing lenses remov
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidmotionpictureele00hall
