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Open-short-load (OSL) compensations are the most popular correcting technique used in impedance measurement instruments for minimizing measurement errors before outputting the final results. This paper presents a practical OSL compensation model for a new developed bipolar bioimpedance spectrometer (BIS) system. The experiment shows that after the OSL compensation, the mean error of impedance magnitudes...
When the current sensor is working in an ideal state, there is a certain linear relationship between the primary-side coil current and the vice-side coil current. However, because of the magnetizing current, the eddy current, the magnetic flux leakage and other phenomena, the current sensor has inevitable energy losses in practical working. So when the current is very small, the linear relationship...
A delay-locked loop of multi-band selector with wide-locking range and low power dissipation is presented. The architecture of the proposed delay-locked loop consists of phase frequency detector, charge pump, band selector, multi-control delay line, and start-up circuit. The multi-band selector is used to extend operation frequency of delay-locked loop by switching the multi-control delay line. The...
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