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:
Sep. 21, 2021
Filed:
Dec. 28, 2017
Zhengzhou Yunhai Information Technology Co., Ltd., Henan, CN;
Weihua Cao, Henan, CN;
Abstract
A direct current voltage step-down regulation circuit structure is provided, which includes a switching circuit and a feedback regulation circuit connected to the switching circuit. An output capacitor is arranged at an output end of the switching circuit, and the switching circuit receives an input voltage at an input end thereof. The feedback regulation circuit includes a first operational amplifier, a second operational amplifier and voltage division power supplies. A non-inverting input terminal of the first operational amplifier is connected to a first voltage division circuit. A non-inverting input terminal of the second operational amplifier is connected to a second voltage division circuit. The voltage division power supplies are respectively connected to the first voltage division circuit and the second voltage division circuit.