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  2. Impedance parameters - Wikipedia

    en.wikipedia.org/wiki/Impedance_parameters

    where Z is an N × N matrix the elements of which can be indexed using conventional matrix notation. In general the elements of the Z-parameter matrix are complex numbers and functions of frequency. For a one-port network, the Z-matrix reduces to a single element, being the ordinary impedance measured between the two terminals. The Z-parameters ...

  3. Electrical susceptance - Wikipedia

    en.wikipedia.org/wiki/Electrical_susceptance

    In electrical engineering, susceptance (B) is the imaginary part of admittance (Y = G + jB), where the real part is conductance (G). The reciprocal of admittance is impedance (Z = R + jX), where the imaginary part is reactance (X) and the real part is resistance (R). In SI units, susceptance is measured in siemens (S).

  4. Electrical impedance - Wikipedia

    en.wikipedia.org/wiki/Electrical_impedance

    In electrical engineering, impedance is the opposition to alternating current presented by the combined effect of resistance and reactance in a circuit. [1]Quantitatively, the impedance of a two-terminal circuit element is the ratio of the complex representation of the sinusoidal voltage between its terminals, to the complex representation of the current flowing through it. [2]

  5. Characteristic impedance - Wikipedia

    en.wikipedia.org/wiki/Characteristic_impedance

    This expression extends to DC by letting tend to 0.. A surge of energy on a finite transmission line will see an impedance of prior to any reflections returning; hence surge impedance is an alternative name for characteristic impedance.

  6. Glossary of electrical and electronics engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_electrical_and...

    The effect of a time-varying electric field, which induces a magnetic field just as the motion of electrical charges does. display device Any device that displays data from an information system, such as a watch readout or an automatic scoreboard. dissipation The loss of energy in a system, such as dielectric loss in a capacitor. dissolved gas ...

  7. Current transformer - Wikipedia

    en.wikipedia.org/wiki/Current_transformer

    For the 4000:5 CT, the secondary impedance can be found as Z S = NZ P = 800Z P, and the secondary voltage can be found as V S = NV P = 800V P. In some cases, the secondary impedance is referred to the primary side, and is found as Z S ′ = N 2 Z P. Referring the impedance is done simply by multiplying initial secondary impedance value by the ...

  8. Charge number - Wikipedia

    en.wikipedia.org/wiki/Charge_number

    Charge number (denoted z) is a quantized and dimensionless quantity derived from electric charge, with the quantum of electric charge being the elementary charge (e, constant). The charge number equals the electric charge ( q , in coulombs ) divided by the elementary charge: z = q / e .

  9. Zeta potential - Wikipedia

    en.wikipedia.org/wiki/Zeta_potential

    Zeta potential is the electrical potential at the slipping plane. This plane is the interface which separates mobile fluid from fluid that remains attached to the surface. Zeta potential is a scientific term for electrokinetic potential [1] [2] in colloidal dispersions.