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. 27, 2021
Filed:
Oct. 22, 2020
Shenzhen Sendis Semiconductor Co., Ltd, Shenzhen, CN;
SHENZHEN SENDIS SEMICONDUCTOR CO., LTD, Shenzhen, CN;
Abstract
A multi-segment linear LED drive circuit, device and method. A Multi-segment linear LED drive circuit includes a reference voltage input module, current source module, voltage control module, current regulation module, at least two LED light strings connected in series and at least two driving modules correspondingly. The reference voltage input module provides reference voltage for each of driving module; the current source module provides DC current for voltage control module; the voltage control module controls input voltage of driving module according to DC current; the driving module lights corresponding LED light string on or off according to reference voltage, input voltage and line voltage constant current; the current adjusting module adjusts constant current; constant current of rear driving module is greater than that of front driving module, and when current passes through rear driving module, front driving module stops driving, harmonic influence and circuit implementation cost are reduced.