The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2019
Filed:
Oct. 23, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Mitsunori Oshima, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The power supply apparatus includes a control unit to control an operation of a first switching element based on a feedback voltage and a voltage of an auxiliary winding of a transformer detected by a voltage detection unit. In a state where the voltage detected by the voltage detection unit is equal to or more than a first threshold voltage, the control unit shifts to a first state where the first switching element is controlled so that the output voltage is to be a first output voltage based on the feedback voltage. In a state where the voltage detected by the voltage detection unit is less than a second threshold voltage smaller than the first threshold voltage, the control unit shifts to a second state where the first switching element is controlled so that the output voltage is to be a second output voltage smaller than the first output voltage.