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. 19, 2023
Filed:
Aug. 23, 2022
Beijing Orient Institute of Measurement and Test, Beijing, CN;
Xiaoding Huang, Beijing, CN;
Yazhen Tong, Beijing, CN;
Jianzhen Cai, Beijing, CN;
Zhongwei Wang, Iinyi, CN;
Pan Pan, Beijing, CN;
Yi Sun, Beijing, CN;
Shuqiang Wang, Beijing, CN;
Jiaolan Yu, Beijing, CN;
Qianjuan Wang, Beijing, CN;
Jingjing Li, Ankang, CN;
Xuwei Hou, Beijing, CN;
BEIJING ORIENT INSTITUTE OF MEASUREMENT AND TEST, Beijing, CN;
Abstract
A four-terminal-pair AC quantum resistance dissemination bridge and related methods are provided. The bridge includes: a supply transformer IVD, a Kelvin branch A, a Wagner branch A, the first and second current sources A, A, an injection inductive voltage divider A, a ratio transformer IVD, the first and second four-terminal AC resistor connection points Z, Z, chokes H, and null indicators D. An isolated inductive winding LO is wound along the ratio transformer IVDand supplies excitation current to primary winding of injection inductive voltage divider Ato avoid the mutual influence among various balance networks and rapid balance of the bridge can be realized. By changing turn ratio of primary winding Land secondary winding Lof the second inductive voltage divider T, the phase shift can be realized through only one set of capacitors for imaginary part error compensation, the bridge with multiple frequency points can be obtained.