Invention Grant
US08809752B2 Booster circuit for enhanced induction heating unit, power-supply unit, and image forming apparatus using the same
有权
用于增强感应加热单元，电源单元和使用其的成像设备的增强电路
- Patent Title: Booster circuit for enhanced induction heating unit, power-supply unit, and image forming apparatus using the same
- Patent Title (中): 用于增强感应加热单元，电源单元和使用其的成像设备的增强电路
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Application No.: US11688420Application Date: 2007-03-20
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Publication No.: US08809752B2Publication Date: 2014-08-19
- Inventor: Tomofumi Yamashita
- Applicant: Tomofumi Yamashita
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-076730 20060320; JP2006-257588 20060922
- Main IPC: H05B6/14
- IPC: H05B6/14 ; G03G15/00
Abstract:
A boosting circuit includes a switch element, a first coil, a second coil, and a capacitor. The switch element generates a first alternating current voltage having a first frequency from a direct current voltage. The first coil generates a magnetic field around the first coil with a flow of the first alternating current voltage having the first frequency in the first coil. The first coil also induces an eddy current in the object with the magnetic field to inductively heat the object. The second coil is cumulatively connected to the first coil. The capacitor is connected to the first coil and the second coil in a parallel manner.
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