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:
Jun. 09, 2009
Filed:
Jun. 02, 2006
Applicant:
Tomohiro Suzuki, Kashihara, JP;
Inventor:
Tomohiro Suzuki, Kashihara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a direct-current stabilized power supply device provided with an output transistor that receives an input voltage from the outside and a control circuit that controls the output transistor so that an output voltage of the direct-current stabilized power supply device is stabilized, there is provided a voltage supply circuit that steps down the input voltage and outputs the voltage thus obtained as a voltage for driving the control circuit. The voltage supply circuit is built as a charge pump circuit that steps down the input voltage and then outputs the voltage thus obtained.