Patent ID: 6856095

Claim:
A magnetron high frequency device comprises: a filtering inductor coupled to a positive end of a direct current power supply and having a first end and a second end; a central tap transformer having a central tap end, a first end and a second end, said central tap end being connected to said second end of said filtering inductor; a filtering capacitor having a first end connected to said first end of said central tap transformer and a second end connected to a negative end of said direct current power supply; a first switch which is connected in series to said second end of said central tap transformer and connected to said negative end of said direct current power supply; an in-series circuit having a second switch and a second capacitor and coupled to said central tap transformer; a first capacitor connected to said central tap transformer; a rectifying device coupled to a secondary winding of said central tap transformer; and a magnetron coupled to said rectifying device, wherein, said first capacitor, said second capacitor and said central tap transformer forms a resonant circuit; and wherein said first capacitor is connected in-series with said central tap transformer and is connected in parallel with said first switch.