High frequency apparatus, design, construction and practical application; a practical treatise for electrical engineers, electricans, physicians, students and experimenters (1920)
Curtis, Thomas Stanley · New York, Norman W. Henley publishing company · leaf 42
Fig. 10, we havethe true Type E instrument in which a tongue of iron pro-jects from one leg of the core between the windings, andnearly makes contact with the opposite leg. This intro-duces a partial magnetic shunt that serves every purposeof the external impedance coil and which has some… … Fig. 8.—Transformer with primary on one leg and secondary on other leg of core to introduce greater magnetic leakage. The first step in the development of the resonance type of transformer reduced to a minimum and the discharge partakes of aclear ringing tone not to be heard in other types…
Electric apparatus and appliances
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