Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 60
e decreased orincreased. CONSTANT POTENTIAL WINDINGS In view of the foregoing it becomes necessary to placethe primary and secondary coils of a constant potentialtransformer very close together and, as a matter of fact,modern transformers are built in sections with the pri-mary and secondary… … Fig. 22
Motion picture theaters · Electric lighting
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