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:
Apr. 17, 2006
Toshihisa Nagata, Hyogo, JP;
Toshihisa Nagata, Hyogo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A constant-voltage power supply circuit for converting an input voltage applied to an input terminal into a predetermined constant voltage for output from an output terminal includes an output transistor to supply from the input terminal to the output terminal an output current responsive to an applied control signal, an error amplifying circuit unit to receive a predetermined bias current to control an operation of the output transistor, and a bias current adjusting circuit unit to supply the error amplifying circuit unit with the bias current responsive to the output current output from the output transistor, wherein the bias current adjusting circuit unit is configured to suspend the supply of the bias current to the error amplifying circuit unit in response to lowering of the output voltage to a predetermined voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile