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:
Jul. 03, 1990
Filed:
May. 26, 1989
Applicant:
Inventor:
Masashi Itoh, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330252 ; 330259 ;
Abstract
An output circuit built in a semiconductor integrated circuit having an output terminal comprises a first transistor having a base and a collector connected to the output terminal, a second transistor having a collector connected to a power source circuit, an input signal source connected to the emitters of the first and second transistors, and a DC amplifier circuit having an input end connected to the output terminal and an output end connected to the base of the second transistor, and operated according to a preset bias potential. A signal occurring at the output terminal is fed back to the base of the second transistor via the DC amplifier circuit.