High frequency heating device

Details High frequency heating device High frequency heating device

2005-02-15

2005-02-15

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Load device and transformer

C315S223000, C315S224000, C219S760000

Reexamination Certificate

active

06856095

ABSTRACT:
This invention provides a magnetron high frequency device which includes: a filtering inductor coupled to a positive end of a direct current power supply; a central tap transformer having a central tap end, a first end and a second end; a filtering capacitor; a first switch which is connected in series to the second end of the central tap transformer and connected to a negative end of the direct current power supply; an in-series circuit having a second switch and a second capacitor and coupled to the central tap transformer; a first capacitor connected in-series with the central tap transformer and connected in parallel with the first switch; a rectifying device coupled to a secondary winding of the central tap transformer; and a magnetron coupled to the rectifying device. The first capacitor, the second capacitor and the central tap transformer forms a resonant circuit.

REFERENCES:
patent: 3973165 (1976-08-01), Hester
patent: 4812960 (1989-03-01), Sakamoto et al.
patent: 4988922 (1991-01-01), Shoda et al.
patent: 5053682 (1991-10-01), Shoda et al.
patent: 5115168 (1992-05-01), Shoda et al.
patent: 5977530 (1999-11-01), Bessho et al.
patent: 6362463 (2002-03-01), Bessyo et al.

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