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:
Jan. 28, 2014
Filed:
Apr. 20, 2011
Kazuhide Namba, Kanagawa, JP;
Akira Chokki, Kanagawa, JP;
Kazuhide Namba, Kanagawa, JP;
Akira Chokki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A power supply circuit includes: a comparison unit that compares a reference voltage and an input voltage and outputs a voltage difference signal; an output voltage generating unit that generates an output voltage based on the voltage difference signal; an input voltage generating unit that generates the input voltage based on the output voltage; a current output unit that outputs a reference current; a resistor that generates the reference voltage in accordance with the reference current; and a capacitor that is connected to the resistor in parallel and is charged by the reference current, wherein the current output unit allows the reference current at the time of startup to be lower than the reference current during an operation.