X-Nico

unusual facts about Impedance


Dielectrophoresis

Impedance sensing: particles collecting at the electrode edge have an influence on the impedance of the electrodes.


Drill string

When the vibrator tunes to the resonant frequency of the system, the reactive load impedance cancels out to zero by virtue of the inductance reactance (mass of the system) equalling the compliance or stiffness reactance (elasticity of the tubular).

Genoa Joint Laboratories

Using Electrochemical Impedance Spectroscopy, it has been found that the rate determining step of the oxygen reduction reaction changes between 700 and 800°C.

Impedance mismatch

Impedance matching, the electronics design practice of setting the input impedance of an electrical load equal to the fixed output impedance of the signal source to which it is ultimately connected

Lipid bilayer characterization

In addition to simple DC current measurements it is also possible to perform AC electrical characterization to extract information about the capacitance and complex impedance of a bilayer.

Network synthesis filters

The driving point impedance is a mathematical representation of the input impedance of a filter in the frequency domain using one of a number of notations such as Laplace transform (s-domain) or Fourier transform (jω-domain).

Nominal impedance

The International Electrotechnical Commission defines a similar set of nominal impedances, but also has a coarser classification of low, medium and high impedance with medium being 600 Ω to 10 kΩ.

Punch-down block

In addition, punch-down blocks are being used to handle larger numbers of faster data signals, requiring greater care and proper procedures to control impedance and crosstalk.

Richard Duffin

1949: With Raoul Bott, "Impedance synthesis without the use of transformers", Journal of Applied Physics 20:816.

Ringtone

In old phones, this voltage was used to trigger a high-impedance electromagnet to ring a bell on the phone.

Saturn Electronics

Saturn's boards are primarily multi-layered PCBs used in diverse industries such as Power Supply, Military, Aerospace, Automotive, Medical, Telecommunications, and High-End Consumer Electronics Fine Line and Spacing Controlled Impedance Designs.

Unbalanced

Unbalanced line or network in electrical circuits, where the impedance of the two conductor paths are not equal


see also