Molded transformer

Details Molded transformer Molded transformer

1992-11-20

1999-11-02

Gellner, Michael L.

Inductor devices

With outer casing or housing

Potted type

336 92, 336205, 336192, H01F 2702, H01F 2729, H01F 2730

Patent

active

059778555

ABSTRACT:
A molded transformer includes a transformer body including a coil bobbin having a spool having a central through-hole and a collar at each of two ends thereof, and a conductive wire, such as a copper wire, wound around the spool, and an EE type or EI type ferrite core which is inserted into the coil bobbin; and a thermoplastic resin for molding the transformer body in such a manner that only a terminal portion used for mounting is exposed through the resin. The resin has a low molecular weight, ensuring a low molding stress and a low melting viscosity.

REFERENCES:
patent: 2574417 (1951-11-01), Rowe
patent: 3570119 (1971-03-01), Baker
patent: 3947796 (1976-03-01), Postma et al.
patent: 4085086 (1978-04-01), Mizuno et al.
patent: 4490706 (1984-12-01), Satou et al.
patent: 4800357 (1989-01-01), Nickels, Jr. et al.
patent: 4939494 (1990-07-01), Masuda et al.
patent: 4985984 (1991-01-01), Umezaki
patent: 5015981 (1991-05-01), Lint et al.
patent: 5028904 (1991-07-01), Kurano
patent: 5034854 (1991-07-01), Matsumura et al.

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