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:
Oct. 18, 2011
Filed:
Feb. 27, 2009
Keisuke Kido, Kobe, JP;
Kazuhiro Komatsu, Kobe, JP;
Keisuke Kido, Kobe, JP;
Kazuhiro Komatsu, Kobe, JP;
Fujitsu Ten Limited, Hyogo, JP;
Abstract
An overcurrent protection apparatus includes two overcurrent protection circuits. The first overcurrent protection circuit compares an electric potential on the downstream side of a first resistance element with a reference potential produced by a second resistance element by a comparator and determines that overcurrent has been caused and intercepts current flowing through a first series regulator when the electric potential on the downstream side of the first resistance element is lower than the reference potential. When the resistance value of the second resistance element is larger than the resistance value of a fourth resistance element of the second overcurrent protection circuit, e.g., 1.2 times the resistance value of the fourth resistance element, the first overcurrent protection circuit intercepts the current flowing through the first series regulator at a current value of 1.2 times a current at which a downstream second series regulator is intercepted by the second overcurrent protection circuit.