Results 131 to 140 of about 49,795 (169)
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Total respiratory input and transfer impedances in humans
Journal of Applied Physiology, 1985Total respiratory input (Zrs,in) and transfer (Zrs,tr) impedances were obtained from 4 to 30 Hz in 10 healthy males by simultaneously measuring mouth and chest flow while applying pseudo-random pressure variations at the mouth. Compared with Zrs,in, the real part of Zrs,tr was larger up to 10 Hz but exhibited a much stronger negative frequency ...
R, Peslin, C, Duvivier, C, Gallina
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Interpretation of respiratory input impedance in healthy infants
Pediatric Pulmonology, 1996Respiratory input impedance (Zin) is a potentially informative test of pulmonary function in infants who are unable to perform standard tests commonly performed in children and adults Analysis of Zin in dogs using the six-element model of DuBois et al. (J Appl Physiol 8:587, 1956) provides estimates of airways resistance separate from tissue resistance,
A C, Jackson +3 more
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Measurement of the input impedance of a RF biased SQUID
Applied Physics Letters, 1979An experimental method to measure the imaginary and real part of the input impedance of an rf biased SQUID is described. The experimental results are in good agreement with the predictions of a detailed theoretical model of the rf SQUID, recently published.
Bordoni F +3 more
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The input impedance of rectifier modulators
Proceedings of the IEE Part B: Electronic and Communication Engineering, 1960It is shown how the input impedance of a rectifier modulator of series, shunt or ring type can be calculated, and a large number of cases are tabulated, assuming (a) that the terminating impedances, while being as frequency selective as desired, are nevertheless purely resistive at all modulation-product frequencies where they are not zero or infinite,
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Differential amplifier input impedance
Proceedings of the IEEE, 1970The analysis of a simple differential amplifier excited by two separate voltage sources reveals that the input impedance which loads the voltage source at the inverting input is not a constant but rather is a function of the characteristics of each voltage source.
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Differential amplifier input impedance and Blackman's impedance relation
IEEE Transactions on Electron Devices, 1972Recently the input impedance of a differential amplifier was derived and discussed. This correspondence derives similar results using a different approach, namely, Blackman's impedance relation, and generalizes earlier observations. The results provide an alternative active RC realization of a bilinear RL impedance.
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A Family of Impedance Source DC-DC Converters With Zero Input Current Ripple
IEEE Transactions on Industrial Electronics, 2023Yijie Wang, Yueshi Guan, Tingting Yao
exaly