Amendment of the Measurement of the Equivalent Series Resistance at High Frequencies

Huimin Liu 1,2 , Baoquan Ai 1 , Fengguo Li 1,*

1 National Demonstration Center for Experimental Physics Education, Guangzhou, Guangdong 510006, China
2 Huizhou High School, Huizhou, Guangdong 516005, China
*Authors to whom correspondence should be addressed.

Received: 2019-10-10 / Accepted: 2020-6-29 / Published: 2020-9-29

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Abstract A new method is proposed in (Ivković, Marković, Ivković, & Cvetanović, 2017) to measure the equivalent series resistance (ESR) and the inductance of a coil at low frequencies. However, a special phenomenon has appeared at high frequencies. It is found that the intercept has appeared and the measured inductance value had a large deviation from its nominal value. According to the analysis of result, an amended method is proposed in this paper. The inductance value should be amended according to the linear relation between the measured value and the nominal value.

Research Areas: Technology

Keywords: ESR, inductance, intercept, amendment