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, 1999
Filed:
Mar. 18, 1998
Applicant:
Inventor:
Yasuhiko Sekimoto, Hamamatsu, JP;
Assignee:
Yamaha Corporation, Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327112 ; 327382 ; 327513 ; 323316 ;
Abstract
A constant current driving circuit capable of performing constant current driving of a load without being influenced by power supply variation, temperature variation and process variation, while reducing the output amplitude on the high level side. The circuit includes a high-level power supply terminal, a low-level power supply terminal, a reference current source circuit, and a switching drive stage.