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:
Dec. 24, 2019
Filed:
Dec. 12, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Atsuhiko Yamaguchi, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A first rectification circuit is connected to an output side of a first piezoelectric transformer and outputs a voltage of a first polarity. A second rectification circuit is connected to an output side of the second piezoelectric transformer and outputs a voltage of a second polarity. A frequency adjustment unit is connected between the second rectification circuit and an output of the second piezoelectric transformer, and adjusts a relationship between an output voltage and a drive frequency of the second piezoelectric transformer. A driving circuit supplies a drive signal to both the first piezoelectric transformer and the second piezoelectric transformer.