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:
Jun. 22, 2021
Filed:
Feb. 28, 2019
Hangzhou Vango Technologies, Inc., Zhejiang, CN;
Zhong Tang, Zhejiang, CN;
Yun Fang, Zhejiang, CN;
Xiaopeng Yu, Zhejiang, CN;
Zheng Shi, Zhejiang, CN;
Nick Nianxiong Tan, Zhejiang, CN;
HANGZHOU VANGO TECHNOLOGIES, INC., Zhejiang, CN;
Abstract
A modulation circuit for voltage to duty-cycle conversion is provided. A first input end and a second input end of a comparator are supplied with a first voltage and a second voltage via a first switch and a second switch respectively. An output end of the comparator outputs a comparison result signal. A charging end of a charging capacitor is connected with a charging current source and a grounding reset module, and is connected with the first input end via a third switch, and is connected with the second input end via a fourth switch. When the comparison result signal flips over, a control module controls the grounding reset module to switch an on-off state of a first switch group including the first switch and the fourth switch and a second switch group including the second switch and the third switch.