Publication

Measurement of transfer impedance under impulse conditions

Michel Ianoz
1987
Journal Articles

Abstract

The measurement of the transfer impedance of a screened coaxial cable using a low-power sinusoidal current has the disadvantage that the saturation effects which occur in the ferromagnetic screen are not reproduced. The authors describe a method for measuring the impedance using a source of current pulses with a magnitude of a few hundred amperes. The measurement results and a comparison between calculated and test values are given

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Michel Ianoz
1987
Journal Articles

Abstract

Official source

Related concepts (32)

Input impedance

The input impedance of an electrical network is the measure of the opposition to current (impedance), both static (resistance) and dynamic (reactance), into a load network that is external to the electrical source network. The input admittance (the reciprocal of impedance) is a measure of the load network's propensity to draw current. The source network is the portion of the network that transmits power, and the load network is the portion of the network that consumes power.

Impedance matching

In electronics, impedance matching is the practice of designing or adjusting the input impedance or output impedance of an electrical device for a desired value. Often, the desired value is selected to maximize power transfer or minimize signal reflection. For example, impedance matching typically is used to improve power transfer from a radio transmitter via the interconnecting transmission line to the antenna. Signals on a transmission line will be transmitted without reflections if the transmission line is terminated with a matching impedance.

Power factor

In electrical engineering, the power factor of an AC power system is defined as the ratio of the real power absorbed by the load to the apparent power flowing in the circuit. Real power is the average of the instantaneous product of voltage and current and represents the capacity of the electricity for performing work. Apparent power is the product of RMS current and voltage.

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Measurement of transfer impedance under impulse conditions

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