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. 18, 1977
Filed:
Mar. 28, 1975
Applicant:
Inventor:
William C Evans, Rochester, NY (US);
Assignee:
Viva-Tech, Inc., Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323 19 ; 323 24 ; 323 34 ;
Abstract
An r.m.s. voltage regulating circuit for maintaining substantially constant the r.m.s. output voltage of an A.C. source. The circuit preferably includes a triac and a timing circuit for controlling the non-conduction angle thereof, preferably at the beginning of each half cycle. A function generator compensates for the non-linearity in the relationship between the r.m.s. value of the output voltage and the amplitude of the A.C. voltage source.