NDLI: New Multi-Frequency Method for the Determination of the Dissipation Factor of Capacitors and of the Time Constant of Resistors

Content Provider	IEEE Xplore Digital Library
Author	Ramm, G. Moser, H.
Copyright Year	2004
Description	Author affiliation: Phys.-Technische Bundcsanstalt, Braunschweig (Ramm, G.; Moser, H.)
Abstract	A new method for the simultaneous determination of the dissipation factor of capacitors and of the time constant of resistors by a multi-frequency method is presented. This method is based on the measurement of impedance ratios at two or more frequencies. A bridge is set up with a programmable two-channel ac voltage source and the impedances to be compared. The impedance ratios are determined by synchronous sampling procedures and application of discrete Fourier transform. In a first experiment, a high-grade gas-filled 1-nF standard capacitor was compared with a stable 1-MOmega ac resistor at frequencies between 40 Hz and 660 Hz. The estimated standard uncertainties (k = 1) are 0.7 times $10^{-6}$ for the dissipation factor of the capacitor and 0.6 ns for the time constant of the ac resistor
Starting Page	93
Ending Page	94
File Size	923670
Page Count	2
File Format	PDF
ISBN	0780384938
DOI	10.1109/CPEM.2004.305457
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-27
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitors Resistors Frequency estimation Impedance measurement Frequency measurement Bridge circuits Voltage Sampling methods Discrete Fourier transforms Uncertainty
Content Type	Text
Resource Type	Article

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