A constant-resistance network in
electrical engineering is a network whose
input resistance The input impedance of an electrical network is the measure of the opposition to current ( impedance), both static ( resistance) and dynamic ( reactance), into the load network that is ''external'' to the electrical source. The input admittance (the ...
does not change with
frequency
Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is eq ...
when correctly terminated. Examples of constant resistance networks include:
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Zobel network : ''For the wave filter invented by Zobel and sometimes named after him see m-derived filters.''
Zobel networks are a type of filter section based on the image-impedance design principle. They are named after Otto Zobel of Bell Labs, who publish ...
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Lattice phase equaliser
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Boucherot cell : ''This article relates to loudspeaker driving. See Zobel network for a more general description of telecommunications usage.''
A Boucherot cell (or Zobel network) is an electronic filter, used in audio amplifiers to damp high-frequency oscil ...
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Bridged T delay equaliser
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The bridged-T delay equaliser is an electrical all-pass filter circuit utilising bridged-T topology whose purpose is to insert an (ideally) constant delay at all frequencies in the signal path. It is a class of image filter.
Applications ...
Electrical engineering
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