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:
Jan. 18, 1994
Filed:
Apr. 05, 1993
Eiji Shinozaki, Tokyo, JP;
Nec Corporation, Tokyo, JP;
Abstract
A magnetic head drive circuit includes a first MOS transistor of a first conductivity type, a bipolar transistor of a second conductivity type, a second MOS transistor of the second conductivity type, a second bipolar transistor of the first conductivity type. The first MOS transistor of a first conductivity type has a source connected to a first power supply. The first bipolar transistor of a second conductivity type is connected in series with the first MOS transistor and has a common node thereof as a first output terminal, an emitter connected to a second power supply, and a collector current controlled as a constant current. The second MOS transistor of the second conductivity type has a source connected to the first power supply. The second bipolar transistor of the first conductivity type is connected in series with the second MOS transistor and has a common node thereof as a second output terminal, an emitter connected to the second power supply, and a collector current controlled as a constant current.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile