Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 218
mber of amperes taken from the line, as wellas the number of watts per hour required from the line toproduce 50 to 55 volts at 30 to 35 amperes at the arc, andby dividing the watts produced at the arc by the input inwatts from the line, the efficiency figures for the econo-mizer have been obtained.… … Fig. 123 the lines of a motor generator, is in the strict sense of theword only in part a motor generator. The principle in-volved permits the use of smaller and more efficient motorand generator than could possibly be had if the apparatuswas a straight motor generator set. The no-volt outfitis…
Motion picture theaters · Electric lighting
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