Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19867
Title: Simple method for measuring the equivalent series inductance and resistance of electrolytic capacitors
Authors: Tsang, KM 
Chan, WL 
Issue Date: 2010
Publisher: Inst Engineering Technology-Iet
Source: IET power electronics, 2010, v. 3, no. 4, ipeebo000003000004000465000001, p. 465-471 How to cite?
Journal: IET Power Electronics 
Abstract: A simple equivalent series inductance (ESL) and equivalent series resistance (ESR) measurement technique for capacitors is presented. A low-cost square waveform voltage source coupled with a reference resistor can be used to measure the ESL, ESR and capacitance of an electrolytic capacitor. By connecting a capacitor in series with a reference resistor, the equivalent output step response of the capacitor voltage reveals the ESL and ESR of the capacitor. To effectively capture the output step response, a square input waveform is used instead. The square waveform voltage source can easily be realised using a DC voltage source and simple switching devices. Experimental results are included to demonstrate the effectiveness of the proposed scheme.
URI: http://hdl.handle.net/10397/19867
DOI: 10.1049/iet-pel.2009.0146
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