Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 179
ess has been recently developed in the United States by T. Baldwin.The essential parts of this receiver are indicated in the diagram, Fig. 19Sa, where a ringshaped horseshoe magnet with poles N and S is fitted with two U shaped soft ironpieces, P-1 and P-2. The telephone winding W, placed… … 195a, bj c, d. Construction and MagneticCircuit of the Baldwin Telephone. RECEIVING CIRCUITS, DETECTORS, TUNING APPARATUS. 169 or isinglass diaphragm M which is screwed under the receiver cap as in the ordinarytelephone. During the passage of a fluctuating current through the winding W the softiron…
Telegraph, Wireless
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