Shielded transformer

Details Shielded transformer Shielded transformer

1983-02-18

1984-11-20

Pellinen, A. D.

Inductor devices

With electric and/or magnetic shielding means

336 84C, 336178, H01F 1504

Patent

active

044841710

ABSTRACT:
A shielded transformer of the type particularly used as an isolation transformer, has a greatly reduced interwinding capacitance. Metallic overlap is provided, completely across a juncture of the metallic shield with faces of the windows in the core, and completely across a juncture of the metallic shield with the metallic case. This metallic overlap is tolerant to misalignments and variations in fit, completely eliminating gaps that cannot be economically made small with the butt joint of present art. The overlap comprises grooves in faces of the window or in the case. In a second embodiment, the overlap comprises grooves in channels on faces of the window and on the case. The shield fits into the grooves.

REFERENCES:
patent: 2114189 (1938-04-01), Kronmiller
patent: 2229373 (1941-01-01), Cole
patent: 4089049 (1978-05-01), Suzuki et al.

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