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. 12, 1989
Filed:
Apr. 04, 1988
Applicant:
Inventor:
Richard C Counts, Dallas, TX (US);
Assignee:
Usi Lighting, Inc., San Leandro, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
3152 / ; 315226 ; 315307 ; 315309 ;
Abstract
Power is provided to a fluorescent lamp through a single integrated circuit (IC) chip. The IC chip contains control logic and power switches. The control logic operates the switches at a frequency which is optimum for the fluorescent lamp. The control logic includes circuits for thermal shut down, load status detection and voltage compensation.