Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 56
Fig. 17 MOTION PICTURE ELECTRICITY 40 composed of a comparatively great number of turns ofsmall insulated copper wire in the shape of coils sur-rounding the core legs. For argument sake, we mightassume that this transformer has 1,000 turns of copperwire for the primary winding and that the line… … Referring to Fig. 18, you see the secondary windingof this same transformer mounted on the core legs. Thiswinding is composed of comparatively-few turns of largerinsulated copper wire, and we may assume in this in-stance the two secondary coils are composed of ioo turns,which if connected to the…
Motion picture theaters · Electric lighting
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