Results 251 to 260 of about 240,426 (307)
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Miniaturized high input impedance preamplifier
Physiology & Behavior, 1967Abstract A transistorized high input impedance and low noise preamplifier which can be mounted on the electrode positioner in a chronic preparation for the recording of unit discharges is described.
Yutaka Oomura +2 more
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IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 2002
The input impedance of high-input-impedance buffers with a bootstrapped biasing circuit and supply rails may attain values much larger then it would correspond to the open-loop gain of the operational amplifier used. Similarly, the efficiency of suppression of capacitance connected to the inputs is unexpectedly high, although not that of the opamp ...
S. Lanyi, M. Pisani
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The input impedance of high-input-impedance buffers with a bootstrapped biasing circuit and supply rails may attain values much larger then it would correspond to the open-loop gain of the operational amplifier used. Similarly, the efficiency of suppression of capacitance connected to the inputs is unexpectedly high, although not that of the opamp ...
S. Lanyi, M. Pisani
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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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High input impedance biological amplifier☆
Physiology & Behavior, 1967Abstract A low level high input impedance general purpose biological amplifier is described.
M WAYNER, R PETERSON, Y OOMURA, H OOYAMA
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2008 18th International Conference Radioelektronika, 2008
A circuit diagram and an equivalent circuit of high-input-impedance buffer stage with bootstrapped input biasing resistor and power supply nodes are given. The efficiencies of the bootstrapping of the input biasing resistor and the power supply nodes are simulated in the equivalent circuit.
Jan Hribik +2 more
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A circuit diagram and an equivalent circuit of high-input-impedance buffer stage with bootstrapped input biasing resistor and power supply nodes are given. The efficiencies of the bootstrapping of the input biasing resistor and the power supply nodes are simulated in the equivalent circuit.
Jan Hribik +2 more
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Assessment of Cerebrovascular Hydraulic Input Impedance
IEEE Transactions on Biomedical Engineering, 1976The feasibility of measuring the individual input impedance in each primary arterial input to intracranial structures was examined in the anesthetized dog. From a Fourier analysis of experimental pressures and flows, carotid and vertebral input impedances with the corresponding components of hydraulic power were computed, giving the anterior, posterior,
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Respiratory input impedance measurement: Forced oscillation methods
Medical & Biological Engineering & Computing, 2001The paper reviews how forced oscillation techniques (FOT) for measuring respiratory input impedance Zrs,in have recently been used in clinical applications. Zrs,in is clinically relevant, as it provides data on both the resistive, Rrs, and nonresistive, Xrs, components of the respiratory system. Additionally, when excitatory test signals extending into
D, MacLeod, M, Birch
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2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED), 2015
Integra-differential equation of Leontovich-Levin played a great role in the development of a theory of thin linear antennas. It is characterized by strict formulation of a problem and by possibilities of evolution of its solution procedure [1]. Analysis of the results obtained by using this equation allows us to clarify separate questions of the ...
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Integra-differential equation of Leontovich-Levin played a great role in the development of a theory of thin linear antennas. It is characterized by strict formulation of a problem and by possibilities of evolution of its solution procedure [1]. Analysis of the results obtained by using this equation allows us to clarify separate questions of the ...
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Input impedance of the cochlea in cat
The Journal of the Acoustical Society of America, 1982Tones were delivered directly to the stapes in anesthetized cats after removal of the tympanic membrane, malleus, and incus. Measurements were made of the complex amplitudes of the sound pressure on the stapes PS, stapes velocity VS, and sound pressure in the vestibule PV.
T J, Lynch, V, Nedzelnitsky, W T, Peake
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INPUT IMPEDANCE OF THE CANINE VERTEBRAL ARTERY
Quarterly Journal of Experimental Physiology, 1987In experiments on six anaesthetized dogs it was found that the vertebral artery contributed 69·2 ± 1·7% of cerebral and 41·5 ± 2·5% of cephalic flow. The input characteristics were that the vertebral artery had a flow of 0·71 ± 0·05 ml.s−1 into an input impedance of 23·7 ± 1·9 GN.m−5.s.
D E, Taylor, E S, Tukmachi
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