Invention Grant
- Patent Title: Converter and switching power supply for turning on switching unit according to decline of input voltage, and image forming apparatus including the switching power supply
- Patent Title (中): 根据输入电压的下降导通开关单元的转换器和开关电源，以及包括开关电源的图像形成装置
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Application No.: US12727782Application Date: 2010-03-19
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Publication No.: US08718504B2Publication Date: 2014-05-06
- Inventor: Shinichiro Matsumoto
- Applicant: Shinichiro Matsumoto
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA, Inc. IP Division
- Priority: JP2009-070181 20090323
- Main IPC: G03G15/00
- IPC: G03G15/00 ; G05F1/10
Abstract:
A converter includes a switching element configured to switch an input voltage, a drive unit configured to drive the switching element, a pulse signal generating unit configured to supply a pulse signal to the drive unit, and a bypass unit configured to connect the switching element and the pulse signal generating unit without involving the drive unit. An operation of the bypass unit maintains the switching element in an on state when the input voltage is switched to a lower voltage and switching of the input voltage is stopped.
Public/Granted literature
- US20100239303A1 CONVERTER, SWITCHING POWER SUPPLY, AND IMAGE FORMING APPARATUS Public/Granted day:2010-09-23
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