# Impedance (input or output)

- Impedance (input or output)
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The total of the resistance, measured in ohms, that a circuit presents to the flow of alternating current at a given frequency (Columbia University). The characteristics 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. Video distribution has standardized on 75-ohm coaxial and 124-ohm balanced cable.

*Audio and video glossary.
2014.*

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**Impedance parameters** — or Z parameters are properties used in electrical engineering, electronics engineering, and communication systems engineering describe the electrical behavior of linear electrical networks when undergoing various steady state stimuli by small… … Wikipedia

**Output impedance** — The output impedance, source impedance, or internal impedance of an electronic device is the opposition exhibited by its output terminals to an alternating current (AC) of a particular frequency as a result of resistance, inductance and… … Wikipedia

**Impedance** — is a concept associated with the transmission of waves and electrical signals. There are many kinds of waves, and impedance is different in each of them, hence this disambiguation page. However, impedance is also a unifying concept. It is related … Wikipedia

**Impedance matching** — In electronics, impedance matching is the practice of designing the input impedance of an electrical load (or the output impedance of its corresponding signal source) to maximize the power transfer and/or minimize reflections from the load.… … Wikipedia

**Input impedance** — The input impedance, load impedance, or external impedance of a circuit or electronic device is the Thévenin equivalent impedance looking into its input.In audio systemsGenerally in audio and hi fi, the input impedance of components is several… … Wikipedia

**Impedance bridging** — In electronics, especially audio and sound recording, a high impedance bridging, voltage bridging, or simply bridging connection is one which maximizes transfer of a voltage signal to the load. The other typical configuration is an impedance… … Wikipedia

**Input/Output** — I Input/Output [englisch, ɪnput/ aʊtput], Eingang/Ausgang bei Verstärkern, elektronischen Effektgeräten, Mischpulten, Tonbandgeräten u. a.; spezielle Angaben: ∙ output/power output (englisch, paʊə(r)): Ausgangsleistung (in Watt), ∙… … Universal-Lexikon

**Dual impedance** — and dual network are terms used in electronic network analysis. The dual of an impedance is its algebraic inverse . Note that and are the duals of each other, that is, they are reciprocal. For this reason the dual impedance is also called the… … Wikipedia

**High-Z looping input** — A&V A high impedance input circuit which also includes an output to enable routing the signal to another piece of equipment … Audio and video glossary

**Nominal impedance** — in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The term is applied in a number of different fields, most often being encountered in respect of: The nominal value of … Wikipedia