Filters
Sound reflection in an acoustic impedance tube terminated with a loudspeaker shunted by a negative impedance converter
and imaginary parts of the shunt circuit impedance must be negative in the considered system. The required negative values of the shunt circuit impedance are achieved using a negative fo...
BI - Akustika a kmity
- 2012 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
A Building Element of an Active Negative Permeability Metamaterial
This paper presents an active particle designed as a building block of an active volumetric metamaterial showing negative magnetic polarizability. The particle is composed of a conducting ring loaded by an impedance with a negat...
JA - Elektronika a optoelektronika, elektrotechnika
- 2013 •
- D
Rok uplatnění
D - Stať ve sborníku
Parameters of a shunt damping the electrodynamic loudspeaker utilized to damp the sound reflection in an acoustic tube
Damping method. The theoretical values of an ideal shunt circuit are simulated based on expected parameters of experimental setup with an acoustic tube. The shunt circuit with given values of complex impedance are implemen...
JA - Elektronika a optoelektronika, elektrotechnika
- 2015 •
- D
Rok uplatnění
D - Stať ve sborníku
Experimental verification of an Electromagnetic Shunt Damping circuit parameters producing an anechoic surface inside an acoustic tube
impedance are implemented using RL and RC circuits and negative impedance converter an acoustic tube when connected to convenient shunting circuit. Thetheoretical values of an ideal shunt circuit...
BI - Akustika a kmity
- 2016 •
- D •
- Link
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D - Stať ve sborníku
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Biquads Based on Single Negative Impedance Converter Implemented by Classical Current Conveyor
The paper deals with continuous-time ARC biquadratic (second-order) filters based on the single classical three-port current conveyors, so called second generation CC II. A unique application of the CC II is discussed, when the terminals Y and Z are ...
JA - Elektronika a optoelektronika, elektrotechnika
- 2007 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Impedance Characteristics of Lead-Acid Accumulators with Various Amounts of Titanium Dioxide in Negative Plates
of negative electrodes. Electrochemical impedance spectroscopy was used for all measurements. Obtained data was subsequently fitted by equivalent circuitsIt has been established that addition of carbon additives to the
Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
- 2014 •
- D •
- Link
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D - Stať ve sborníku
Výsledek na webu
Adaptive acoustic metasurfaces for the noise shielding.
on the electronic control of the acoustic impedance (AI) of the AAMS, which is achieved by connecting the piezoelectric transducers to the active shunt circuits. When the connected shunt circuit has a required value of the...
Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
- 2017 •
- D
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D - Stať ve sborníku
Track occupancy detection using ratio of open-circuit impedance to short-circuit impedance
This paper deals with the change of the ratio of the open circuit impedance to short-circuit impedance of the electric traction depending on the distance circuit and the impedance of the occupied ...
Electrical and electronic engineering
- 2018 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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Evaluation of Load Impedances, Discontinuity and Impedance Mismatch in PLC Networks by Experimental Measurements with Coupling Circuits
Two different coupling circuits, capacitive and inductive, are introduced. These coupling circuits are analyzed by laboratory measurements. The measurements of the load impedance of coupling circuits are realized. ...
Electrical and electronic engineering
- 2015 •
- D •
- Link
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D - Stať ve sborníku
Výsledek na webu
Equipment for impedance matching testing of digital circuits
The equipment enables quality signal measurement for different impedance matching of data buses between digital circuits.
JA - Elektronika a optoelektronika, elektrotechnika
- 2010 •
- Gfunk
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Gfunk - Funkční vzorek
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