Shielded inductor

Details Shielded inductor Shielded inductor

1991-05-06

1992-11-24

Kozma, Thomas J.

Inductor devices

Core forms casing

336 84M, 336 96, 336212, H01F 1504, H01F 2726

Patent

active

051666553

ABSTRACT:
A shielded inductor is formed by winding a coil of wire around an axial leaded form, and disposing a magnetic shield around the axial leaded form and the coil of wire. In a preferred embodiment, the magnetic shield is epoxied to the coil of wire. In a further preferred embodiment, a premold is formed around the axial leaded form and the coil of wire, and the magnetic shield is epoxied to the premold, the premold serving to position the magnetic shield concentrically with respect to the axial leaded form and the coil of wire. In a still further embodiment, the premold is provided with a shoulder against which the magnetic field abuts, thus positioning the magnetic shield along the axis of the axial leaded form.

REFERENCES:
patent: 1673062 (1928-06-01), Davis
patent: 1968225 (1934-07-01), Shell et al.
patent: 2413201 (1946-12-01), Tillman
patent: 2905915 (1959-09-01), Harris
patent: 2933677 (1960-04-01), Lieber
patent: 2949591 (1960-08-01), Craige
patent: 2976502 (1961-03-01), Hill
patent: 3381251 (1968-04-01), Fuller
patent: 3551864 (1970-12-01), Sweeney et al.
patent: 3829806 (1974-08-01), Lathouwers et al.
patent: 4245207 (1981-01-01), Murakami et al.
patent: 4647892 (1987-03-01), Hewitt

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