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. 16, 1986
Filed:
Dec. 19, 1984
Applicant:
Inventor:
Stephen C Payne, New Albany, IN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315176 ; 315170 ; 315173 ; 315194 ; 315244 ; 315D / ; 315D / ;
Abstract
A lamp dimmer circuit for a high intensity discharge lamp includes an auto transformer, a power factor correction capacitor, a reactor ballast, a solid state phase control current module, a dimming control, a high frequency power supply, a coupling transformer, a high frequency by pass capacitor and a lamp. The high frequency low current source formed by the high frequency by pass capacitor, coupling transformer and high frequency power supply act to maintain the lamp arc even with variations in line voltage.