High frequency heating device

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.