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:
May. 22, 2018
Filed:
Dec. 29, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Akitomo Miyamoto, Toride, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The power source device comprises a transformer, a voltage detection unit, a CPU and a drive circuit. Through an applying of a DC voltage, the transformer generates an AC voltage for development of an amplitude corresponding to the voltage value and an applying time of the DC voltage. The voltage detection unit detects a voltage value of the DC voltage. The CPU sets a reference value and generates PWM signals for controlling the applying time in accordance with a difference between the voltage value detected in the voltage detection unit and the reference value. The reference value is a voltage value of the DC voltage when an amplitude of the AC voltage reaches a predetermined value in a predetermined applying time. Controlling the applying time of the DC voltage to the transformer in accordance with the PWM signals, the drive circuit suppress variation in amplitude of the AC voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile