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:
May. 08, 2012
Filed:
May. 29, 2008
Applicant:
Hirohisa Abe, Osaka, JP;
Inventor:
Hirohisa Abe, Osaka, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/00 (2006.01); H02H 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A switching regulator is disclosed. In the switching regulator, when a power source voltage is lowered to a first predetermined value due to an overcurrent, a voltage boost operation is temporarily stopped, and a delay timer of a delay circuit is not reset. When the overcurrent is detected again due to a rise of the power source voltage after temporarily stopping the voltage boost operation, the delay timer of the delay circuit continues to count the delay period. The voltage boost operation is completely stopped by receiving a signal output from the delay circuit when the delay timer completes the counting after passing a predetermined delay period.