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:
May. 08, 1990
Filed:
Dec. 28, 1988
Applicant:
Inventors:
Shigeru Atsumi, Tokyo, JP;
Toru Yoshida, Kawasaki, JP;
Yasuo Kawahara, Kawasaki, JP;
Fuminari Tanaka, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 56 ; 361 58 ; 361 91 ; 361111 ; 357 2313 ;
Abstract
A bipolar transistor for clamping an excess input potential is provided near an input pad. A signal from the input pad is supplied through a wire to the gate of a MOS transistor in the input stage. A diode is provided near the gate of the MOS transistor. The diode absorbs a potential oscillation generated in the wire near the gate of the transistor, which is due to action of an inductance involved in the wire.