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. 13, 2010
Filed:
Mar. 19, 2007
Tong Zhou, Shenzhen, CN;
Kun Le, Shenzhen, CN;
Innocom Technology (Shenzhen) Co., Ltd., Shenzhen, Guangdong Province, CN;
Innolux Display Corp., Miao-Li County, TW;
Abstract
An exemplary charging circuit () includes for charging a load component () includes a power supply unit (), a feedback circuit, and a sampling resistor (). The power supply unit includes a pulse width modulation circuit () and a power output terminal () configured to output a direct current supply. The feedback circuit includes an amplifying comparator (), a constant voltage circuit (), a transistor (), and an optoelectrical coupler (). The constant voltage circuit is configured to generate a reference voltage and apply the reference voltage to a negative input terminal of the amplifier comparator. An output terminal of the amplifier comparator is connected to the pulse width modulation circuit via the transistor and the optoelectrical coupler. The sampling resistor includes a current sampling terminal connected to a positive input terminal of the amplifier comparator.