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Impedance plethysmography
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Ipg, английский
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Impedance, английский
- The total opposition to current flow in an a.c. electrical circuit. measured in ohms.
- The total opposition offered by a device to the flow of an alternating current. measured in ohms.
- A property of all metallic and electrical conductors that describes the total opposition
- Импеданс
- A property of all metallic and electrical conductors that describes the total opposition to current flow in an electrical circuit. resistance, inductance, capacitance and conductance have various influences on the impedance, depending on frequency, dielectric material around conductors, physical relationship between conductors and external factors. is often referred to with the letter z. it is measured in ohms, whose symbol is the greek letter omegaw.
- In alternating-current electric circuits, a quantitative measure of the opposition to the flow of current upon the application of voltage; measured in ohms.
- Полное сопротивление
- Волновое сопротивление проводника; импеданс
- The complex sum of resistance and reactance. the opposition or resistance of a circuit to the flow of alternating current.
- This term is used to refer to the total opposition to the flow of current represented by the combined effect of resistance, inductance and capacitance of a circuit.
Impedance, английский
Сопротивление среды передачи распространению электромагнитных волн. определяется геометрией проводников и диэлектрическими свойствами изоляции. измеряется в омах.
Impedance (acoustic), английский
Resistance to flow of ultrasonic energy in a medium. impedance is a product of particle velocity and material density.
Impedance (input or output), английский
- The input or output characteristic of a system component that determines the type of transmission cable to be used. the cable used must have the same characteristic impedance as the component. expressed in ohms. video distribution has standardized on 75-ohm coaxial and 124-ohm balanced cable.
- The input or output characteristic of a system component that determines the type of transmission cable to be used. expressed in ohms.
Impedance analysis, английский
In electromagnetic testing, an analytical technique that consists of correlating changes in the amplitude, phase, quadrature components, or all of these of a complex test signal voltage to the condition of the test specimen. impedance, acoustic: see acoustic impedance. impedance diagram, normalized: diagram in which the impedance of the probe in air is a reference value to which impedance values in other conditions are compared. usually the plotted data are (1) the measured reactance divided by the reactance of the coil in air versus (2) the measured resistance less the resistance in air divided by the coil reactance in air.
Impedance bond, английский
- A trackside mounted device, connected across running rails, which will allow a free flow of traction current between traction return rails and provide a connection for earthing the traction return rails and rail side structures without introducing any imbalance in the signalling track circuits.
- A connection box, usually mounted between the rails, which provides continuity of return current for traction power supply circuits where rails have been divided into insulated sections for signalling track circuit purposes.
Impedance bridge, английский
Impedance bump, английский
Скачок полного сопротивления
Impedance discontinuity, английский
Разрыв непрерывности полного сопротивления
Impedance dispersion, английский
Impedance earthed (neutral) system, английский
Impedance matching method, английский
Метод сравнения импедан- сов расчет давления во фронте ув на
Impedance plane diagram, английский
- A graphical representation of the locus of points indicating the variations in the impedance of a test coil as a function of basic test parameters such as electrical conductivity, magnetic permeability, test frequency, thickness and magnetic coupling.
- Graphical representation of the locus of points indicating the variations in the impedance of a test coil as a function of a parameter, such as conductivity or liftoff. inmotion
Impedance protection, английский
Impedance relay, английский
Impedance test, английский
Метод определения полного электрического сопротивления см. также aztac test -зг
Impedance testing, английский
A term generally applied to eddy current testing which measures the overall change in impedance caused by variations in electromagnetic properties as differentiated from phase analysis testing which measures changes in phase.
Impedance voltage (of a transformer), английский
Plethysmography, английский
A method of recording the changes in the volume of organs, mainly used to measure blood flow in the limbs
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Imp, английский
Ipg, английский
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