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. 16, 1990
Filed:
Jan. 25, 1989
Applicant:
Inventors:
Assignees:
Agency of Industrial Science & Technology, Ibaragi, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 30 ; 357 41 ; 357 58 ;
Abstract
An optical control circuit is formed by connecting a photoconductive element and resistive element at their one end to the control electrode of a transistor, while connecting the other end of the photoconductive element to one of output electrodes of the transistor and the other end of the resistive element to a predetermined voltage supply point. With this simple circuit arrangement, an effective input control with respect to the control electrode of the transistor can be realized.
Hayashi, Yutaka. (1990). Optical control circuit and semiconductor device for realizing the (U.S. Patent No. 4894699). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4894699
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile