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.:

US 7821228 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 26, 2010

Filed:

Nov. 29, 2007
Applicants:

Qiang Zhu, Shenzhen, CN;

Shan-ming Liao, Shenzhen, CN;

Inventors:

Qiang Zhu, Shenzhen, CN;

Shan-Ming Liao, Shenzhen, CN;

Assignees:

Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, Guangdong Province, CH;

Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A charger includes a battery module, a boosting and charging circuit, a low voltage boosting circuit, and a charging interface. The battery module provides an operating voltage for the boosting and charging circuit and the low voltage boosting circuit. When the operating voltage is greater than a reference voltage of the boosting and charging circuit, the boosting and charging circuit module works and outputs a charging voltage to the charging interface. When the operating voltage is smaller than the reference voltage of the boosting and charging circuit but greater than a starting voltage of the low voltage boosting circuit, the low voltage boosting circuit works and boosts the operating voltage to the boosting and charging circuit, and then the boosting and charging circuit module works and outputs the charging voltage to the charging interface for the mobile phone.


Find Patent Forward Citations

Zhu, Qiang. (2010). Mobile phone charger (U.S. Patent No. 7821228). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7821228

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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