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:
Aug. 04, 2015
Filed:
Oct. 17, 2012
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Kazuharu Date, Osaka, JP;
SHARP KABUSHIKI KAISHA, Osaka, JP;
Abstract
An ion generation device includes: a high voltage generation circuit; and an ion generation element. The high voltage generation circuit includes: a capacitor; a high voltage transformer; a switching element; and a pulse signal generation portion which generates a pulse signal for controlling the turning on and off of the switching element. The pulse signal generation portion adjusts a pulse width of an on-period such that the pulse width of the on-period of the pulse signal is substantially equal to a time obtained by multiplying the reciprocal of an output voltage frequency at the time of a forward operation of the high voltage transformer by one-fourth.