中图分类号：TM401 文献标志码：A DOI: 10.16157/j.issn.0258-7998.233846 中文引用格式： 熊磊，蔡光跃. 电感参数可视化测量方法研究[J]. 电子技术应用，2023，49(6)：54-57. 英文引用格式： Xiong Lei，Cai Guangyue. Research on the visual measurement method of inductance parameters[J]. Application of Electronic Technique，2023，49(6)：54-57.
Research on the visual measurement method of inductance parameters
Xiong Lei 1，Cai Guangyue1，2
(1.School of Communication & Information Engineering， Shanghai Technical Institute of Electronics & Information， Shanghai 201411， China；2.Shanghai Panhuan Electronic Technology Co.， Ltd. ， Shanghai 200090， China)
Abstract： Inductors have many parameters, of which the two most important parameters determine the performance of the inductor: inductance and saturation current. The existing inductance parameter measurement methods can either measure the inductance value more accurately or use other auxiliary means to measure the saturation current, but they cannot measure the inductance value and the saturation current at the same time. Combining the special single trigger and graphic display technology of the digital storage oscilloscope, this paper designs a simple resistance and inductance series measurement circuit. According to the measurement definition of inductance value, it measures the voltage value at both ends of the inductance and the current change value of the sampling resistor to calculate the inductance value. The digital storage oscilloscope displays the inflection point of the measurement curve, and the inductor saturation current can be calculated. It is verified by experiments that this method can obtain accurate inductance values and at the same time obtain intuitive saturation current values. The method is simple in principle, reasonable in design, and easy to operate. It is an economical and effective method for measuring inductance parameters in the absence of an LCR tester in the laboratory.
Key words : digital storage oscilloscope；inductance；saturation current；visual measurement；single trigger