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Ease of C. W. Transformer Design
Radio for February, 1922
By A.H. Babcock
A year or so ago, one of my sons came to me with a transformer core he had traded-in, and asked, "How can I tell how many turns to wind on this for a 110 volt circuit ?" Here was a practical question that demanded an answer in terms a school-boy could understand and apply to every-day use. The answer was found in such simple form that he wound that core, tried it in service, and then went around the neighborhood hunting up transformers to design-for an adequate fee - which his father did not share; another example of the manner in which a business man commercializes the technical knowledge of an engineer.