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:
Nov. 23, 1982
Filed:
Nov. 24, 1980
Applicant:
Inventors:
Kiyoto Nagasawa, Tokyo, JP;
Yuzi Narumi, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; G06G / ;
U.S. Cl.
CPC ...
328144 ; 307304 ; 315199 ; 315307 ; 323243 ; 355 69 ;
Abstract
An effective voltage across a load such a lamp (L) is squared by means of a field effect transistor (FET) to produce an output voltage which varies in proportion to the power through the load (L). A trigger phase of a thyristor (TRC) connected between an A.C. power source (PS) and the load (L) is automatically varied in such a manner that the output voltage and thereby the power through the lamp (L) are regulated to a desired value.
Nagasawa, Kiyoto. (1982). Lamp power regulator (U.S. Patent No. 4360783). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4360783
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile