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:
Sep. 11, 1990
Filed:
Dec. 21, 1988
Applicant:
Inventors:
Alberto Gola, Broni, IT;
Gianluigi Pessina, Lainate, IT;
Assignee:
SGS-Thomson Microelectronics s.r.l., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307570 ; 307584 ; 307631 ; 307639 ; 3072965 ; 307605 ;
Abstract
The pilot circuit comprises an R-C network consisting of a condenser inserted between a gate terminal of the MOS transistor and ground and a resistance for charging said condenser. In parallel with the resistance there is placed an SCR circuit with associated threshold circuit which permits firing of the SCR circuit when the charge voltage of the condenser reaches a preset threshold.