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:
Feb. 26, 2013
Filed:
Feb. 27, 2008
Yoichi Kyono, Niiza, JP;
Yoichi Kyono, Niiza, JP;
Sanken Electric Co., Ltd., Niiza-shi, JP;
Abstract
A multiple-output switching power source apparatus has a series resonant circuit connected in parallel with a switch Qand including a primary winding and a current resonant capacitor, a first rectifying-smoothing circuit rectifying and smoothing a voltage of a secondary winding in an ON period of the switch to provide a voltage Vo, a series resonant circuit connected in parallel with the switch and including a primary winding and a current resonant circuit, a second rectifying-smoothing circuit rectifying and smoothing a voltage of a secondary winding in the ON period of the switch Qto provide a voltage Vo, and a control circuit controlling an ON period of a switch Qaccording to the output voltage Voand the ON period of the switch Qaccording to the voltage Voand limit the ON period of the switch Qif the voltage Voexceeds a predetermined voltage.