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本文介绍了一种测量小电感的新型电桥。该电桥可在测量过程中用增量法消除线路中的一系列杂散因素的影响,因而对测量有短路片的标准电感器达到了±1×10~(-3)Lx±(?)的准确度。电桥的线路简单,在实验室中只需用少量商品仪器就可组成此种电桥,也便于构成可携式设备适应各种现场测量的要求。在现场测量中采用专用夹具后准确度可达±1×10~(-3)Lx±5~10(?)。
This article describes a new type of bridge that measures small inductance. The bridge eliminates the effects of a series of spurious components in the line by using the incremental method during the measurement, thus achieving ± 1 × 10 -3 Lx ± (-) for standard inductors with short pieces. Accuracy The circuit of the bridge is simple. Only a small number of commercial instruments are needed in the laboratory to form such a bridge. It also facilitates the construction of portable devices to meet the requirements of various field measurements. Accuracy of ± 1 × 10 ~ (-3) Lx ± 5 ~ 10 (?) After using special fixtures in the field measurement.