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In this paper an object of analysis and simulation modeling are the basic programmable circuits using CMOS digital potentiometers or Resistive Digital-to-Analog Converters (RDACs). Based on the analysis and principle of operation an improved SPICE-based behavioral model for RDAC potentiometers is created. The model accurately reflects resolution (wiper steps), nominal end-to-end resistance, wiper resistance,...
The comparison of effectiveness of induction motors fault detection methods based on experimental results analysis is presented. Researches showed possible disadvantages of the current spectra analysis method and advantages of the method based on phase power and total three-phase instantaneous power spectra analysis.
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