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:
Feb. 03, 2004
Filed:
Feb. 04, 2002
Seiko Epson Corporation, Tokyo, JP;
Abstract
A constant-voltage generation circuit creates a constant voltage. This constant-voltage generation circuit comprises a first voltage creation circuit for creating a reference voltage and a second voltage creation circuit for creating the constant voltage which has a predetermined relationship with the reference voltage. The first voltage creation circuit comprises a first constant-current source - for supplying a constant current and a first voltage-control transistor through which this constant current flows, for outputting the reference voltage on the basis of a predetermined potential. The constant current is set to a value within the saturated operating region of the first voltage control transistor