Invention Grant
- Patent Title: Power supply apparatus and image forming apparatus changing a frequency of a switching operation
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Application No.: US16057636Application Date: 2018-08-07
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Publication No.: US10547235B2Publication Date: 2020-01-28
- Inventor: Yasuhiro Shimura
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JP2017-156870 20170815
- Main IPC: H02M3/335
- IPC: H02M3/335 ; H02M1/08 ; G03G15/00 ; H02M1/36 ; H02M1/00 ; H02M1/34
Abstract:
The power supply apparatus alternately repeats a control between a first control of varying a frequency of switching operation within a predetermined range and for a predetermined cycle according to a frequency determined based on a feedback voltage, and a second control of varying the frequency within a range narrower than the predetermined range or a third control of controlling the frequency to be a constant frequency.
Public/Granted literature
- US20190058386A1 POWER SUPPLY APPARATUS AND IMAGE FORMING APPARATUS Public/Granted day:2019-02-21
Information query
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