Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 119
ary winding is mounted so that it can be turned at a complete right Fig. 119—Type A Oscillation Transformer of theAmerican Marconi Company. 108 PRACTICAL WIRELESS TELEGRAPHY. angle to the primary or at any required intermediate position, which permits closeregulation of the transformer coupling.… … COPPER 5TWP, VARIABLECONTACT
Telegraph, Wireless
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