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:
Nov. 23, 2004
Filed:
Jul. 02, 2003
Koichi Miyanaga, Kyoto, JP;
Hiroyuki Ishikawa, Kyoto, JP;
Rohm Co., LTD, Kyoto, JP;
Abstract
A stabilized power supply unit having a current limiting function, comprising a detection transistor impressed with the same control voltage as the output transistor of the power supply unit, adapted to output a detection current which is exactly proportional to the output current, irrespective of the magnitude of the output current. The current detection transistor is controlled by the control voltage controlling the output transistor. A voltage correction unit is provided to control the voltage of the output end of the current detection transistor, equalizing the voltage with the output voltage. This arrangement provides a detection current exactly proportional to the output current.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile