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. 05, 1991
Filed:
Jun. 13, 1988
Kazuhisa Ishiguro, Gunma, JP;
Mikio Yamagishi, Gunma, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A reactance circuit comprises a differential amplification circuit formed by differentially connecting the first and second transistors to each other, a load connected to a collector of the first transistor, a reactance element interposed between a base of the first transistor and a reference potential point, and a capacitor and a resistor connected in series between the collector and the base of the first transistor. A negative feedback loop to the first transistor is formed by the capacitor and the resistor. Accordingly, when the collector of the first transistor is used as an output terminal, a negative equivalent reactance is produced in the output terminal.