نتایج جستجو برای: digital voltmeter
تعداد نتایج: 307948 فیلتر نتایج به سال:
C ARBON DIOXIDE can be measured by infrared absorptiometry, so carbon dioxide evolved from a sample of serum or plasma by acid can be determined by this instrumental technique. Procedures published earlier based on this approach (1, 2) were not competitive with other techniques available for analysis of blood carbonates since they required 1.0 and 0.5 ml of blood, respectively, for the sample a...
The output voltage is a key parameter to quantify the performance of piezoelectric devices, particularly for energy harvesters and sensors. Our recent work (Su et al., 2015) reported that the measured output voltage depends on the inner resistance of voltmeter used. It is contrary to the established concept that the measured results should be independent of the instruments used. Similar measure...
Multi-channel multi-frequency electrical impedance tomography (EIT) systems require a careful calibration to minimize systematic errors. We describe novel calibration methods for the recently developed KHU Mark1 EIT system. Current source calibration includes maximization of output resistance and minimization of output capacitance using multiple generalized impedance converters. Phase and gain ...
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