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:
Jun. 23, 1992
Filed:
Apr. 24, 1990
Yoshiyuki Terashima, Suwa, JP;
Seiko Epson Corporation, , JP;
Abstract
A voltage regulator forms a constant voltage based on the sum voltage of the threshold voltages of multiple transistors comprising multiple first transistors with mutually different threshold voltages, a first switch to select a first transistor output from the multiple first transistors, multiple second transistors with mutually different threshold voltages and a second switch to select a second transistor from the multiple second transistors, and a summing circuit connected to the multiple first and second transistors for providing a sum voltage from the threshold voltages of the selected first and second transistors. Alternatively, the voltage output of a single transistor in lieu of one of said multiple transistor groups and may be combined with the output voltage of a selected transistor from the other multiple transistor group for input to the summing circuit.