High voltage transformer with side insulation support and formed

Details High voltage transformer with side insulation support and formed High voltage transformer with side insulation support and formed

1997-09-18

1999-10-26

Walberg, Teresa

Electric heating

Microwave heating

With specific transformer

336 98, H05B 664

Patent

active

059733071

ABSTRACT:
A high voltage transformer, especially for use in a microwave oven is provided. The high voltage transformer includes: a primary coil to which a commercial power supply is connected; a secondary coil for inducing a high voltage necessary for driving a magnetron of the microwave oven, with respect to the primary coil; a heater coil for inducing voltage necessary for heating a negative electrode of the magnetron, with respect to the primary coil; a core for forming a common magnetic path for the primary and secondary coils and the heater coil; and an insulation support including a side insulating member disposed between the primary, secondary and heater coils and the core, a bottom insulating member disposed between the bottom of the secondary coil and the core and a lead wire support integrally combined with the side insulating member and the bottom insulating member and formed with holes through which lead wires of the secondary coil pass. Accordingly, the insulation characteristic of the coils with respect to the core is improved and the coils can be prevented from being damage. Further, the probability of an electric shock due to exposure of terminals, especially at a high voltage side, of the transformer can be reduced and an assembly efficiency thereof can be increased.

REFERENCES:
patent: 5200731 (1993-04-01), Tochio et al.

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