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:
Jul. 14, 1992
Filed:
Jan. 31, 1991
Yasuhisa Sugo, Hachiouji, JP;
Fujitsu Ltd., Kawasaki, JP;
Abstract
A constant voltage generating circuit includes a first power supply line coupled to an external power supply line, at least one second power supply line having a voltage different from that of the first power supply line, a level shift circuit having at least one transistor coupled between the first power supply line and the second power supply line, a resistor having one end connected to one of the first and second power supply lines and other end coupled to a base of a transistor provided at a final stage of the level shift circuit, and a current control circuit operatively connected between the other end of the resistor and another of the first and second power supply lines. The current control circuit suitably controls current flowing in the resistor. As a result, it is possible to continually feed a constant voltage irrespective of a fluctuation in temperature, power supply voltage, or the like.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile