Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 119
COPPER 5TWP, VARIABLECONTACT … Fig. 121—Showing Position iMaximum Coupling of TypeA Oscillation Trans-former. Fig. 122—Pancake Type Oscillation Transformer. turns of the secondary and therefore no induc-tion takes place in the secondary but in the posi-tion, Fig. 121, the lines of force cut the secondaryturns at a right angle…
Telegraph, Wireless
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