Microwave oven

Application Number: 00108169
Application Date: 2000.04.27
Publication Number: 1279377
Publication Date: 2001.01.10
Priority Information: 1999/6/30 JP 185012/99
International: F24C7/02;F24C7/08
Applicant(s) Name: K.K.Toshiba
Inventor(s) Name: Nakagawa Tatsuya
Patent Agency Code: 31100
Patent Agent: sun jingguo
Abstract The subject of this invention is to provide a microwave oven. Because the primary side of a booster transformer 5 is connected with an inverter power supply of half bridge type, no DC component flows in the primary winding of the booster transformer 5, and its saturate voltage may remain small. The transformer 5 has a core gap 40 consisting of core segments 28 and 29, and because the core gap 40 is positioned on the side with the secondary winding 22, the secondary winding 22 has a reduced self-coupling coefficient, and the self-resonance frequency on the side with secondary winding 22 is shifted to the high frequency side. This enlarges the resistance of the side with secondary winding 22 and lessens the Q value of self-resonance on the side with the transformer secondary winding 22, so that generation of ringing due to self-resonance can be prevented.