High-frequency transformer for microwave oven

Details High-frequency transformer for microwave oven High-frequency transformer for microwave oven

1988-12-08

1989-12-05

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055R, 336178, 336134, H05B 664

Patent

active

048854450

ABSTRACT:
A high-frequency transformer for a microwave oven comprises: an E-shaped first core of ferrite of a low-voltage side; a primary winding wound around the first core over a coil bobbin; an E-shaped second core of ferrite of a high-voltage side disposed in opposition with the first core with a specific gap therebetween; a gap-filling insulation material interposed between the first and second cores; a secondary winding wound around the second core; and a grounding plate connected electroconductively between the first core and a bottom plate of the microwave oven, wherein the distance between the primary winding and the first core is greater than the gap between the two cores.

REFERENCES:
patent: 2064771 (1936-12-01), Vogt
patent: 3514566 (1970-05-01), Ironfield
patent: 3515986 (1970-06-01), Peschel
patent: 3979707 (1976-09-01), Prince, Jr.
patent: 4529956 (1985-07-01), Atherton
patent: 4587506 (1986-05-01), Hoeksma

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