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:
Sep. 14, 2004
Filed:
Sep. 25, 2002
Masahiro Shimozono, Kitakyushu, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A constant current circuit delivering a constant current to a load connected between first and second output terminals comprises, a reference current generator configured to generate a reference current, a current mirror circuit configured to amplify the reference current, an output transistor configured to deliver the constant current based on an output of the current mirror circuit, a signal source configured to deliver a pulse control signal, an auxiliary switching circuit having a switch terminal configured to deliver a switch signal in response to the pulse control signal, and a discharge terminal configured to deliver a discharge signal to the current mirror circuit when the switch signal is stopped; and a switch circuit configured to turn off the output transistor with receiving the switch signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile