Beijing Orient Institute of Measurement and Test

Shuqiang Wang

Yi Sun

Pan Pan

Yazhen Tong

Qianjuan Wang

Xiaoding Huang

Jianzhen Cai

Jingjing Li

Jiaolan Yu

Xuwei Hou

Zhongwei Wang

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.

Four-terminal-pair alternating current quantum resistance dissemination bridge and related method

Growing community of inventors

Beijing, China

Shuqiang Wang