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:
Nov. 23, 2010
Filed:
Nov. 16, 2007
Toru Ashikaga, Niiza, JP;
Toru Ashikaga, Niiza, JP;
Sanken Electric Co., Ltd., Niiza-shi, JP;
Abstract
An alternating current power supply device is provided with switch elements Q, Qfor converting direct current power from a direct current power supply Vin into alternating current power; a transformer Tfor converting the voltage of the alternating current power converted by the switch elements into other voltage; a loadconnected to an output terminal of the transformer; a first detecting circuitfor detecting a first electric signal indicating power to be supplied to the load; a second detecting circuitfor detecting a second electric signal indicating the voltage of the direct current power supply; a feedback circuitfor generating a feedback signal based on the first electric signal detected by the first detecting circuit and the second electric signal detected by the second detecting circuit; and a control circuitfor generating a control signal based on the feedback signal from the feedback circuit and controlling on/off of the switch elements by the control signal so that power to be supplied to the load is at a prescribed value.