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:
Jul. 07, 2020
Filed:
Jul. 23, 2019
Applicant:
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Inventor:
Hyunchul Eum, Gwangmyeong, KR;
Assignee:
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/10 (2020.01); H05B 45/37 (2020.01); H05B 45/395 (2020.01);
U.S. Cl.
CPC ...
H05B 45/37 (2020.01); H05B 45/10 (2020.01); H05B 45/395 (2020.01);
Abstract
A circuit for controlling a lighting system includes a phase angle detector detecting a phase angle of a rectified input signal and generating a phase angle signal indicative of the phase angle, and a current shape controller determining a current shaping signal using the detected phase angle and adjusting the rectified input signal in response to the current shaping signal. The current shape controller varies a limiting value of the rectified input signal with the phase angle.