Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 33
used. Fig. 3 gives a diagrammatical illustration of an elec-tric generator and a 2-wire distribution system in its sim-plest form operating a motor, incandescent lamps andarc lamps. The illustration indicates the names of theprincipal parts of the system and how connections aremade. We have already… … Fig-3 MOTION PICTURE ELECTRICITY 27 Where large current supply is required, it be-comes necessary to make the electricity by a dyna-mo electric machine driven by an engine or similarpower. THREE-WIRE SYSTEM FOR DIRECTCURRENT The 2-wire direct current distributing system is used,as a general rule,…
Motion picture theaters · Electric lighting
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