impedance
2
7.9
- noun
- /ɪmˈpiːdəns/
- Specialized
:
impedancia
- Impedance matching is not good.
- output impedance
- input impedance
- bioelectrical impedance
If you want to look at the details of the analysis that's done, the transmission line looks sort of like a black box with an impedance in it.
- If you want to look at the details of the analysis that's done, the transmission line looks sort of like a black box with an impedance in it.
- But if you have equal resistance, then you block it, you have impedance and it heats up in electricity.
Examples
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The assessments were carried out with a Danplex Impedance Meter Model ZA21.
Academic text (1990) -
Other imaging methods, based on magnetic field measurements, infrared transmission, or electrical impedance, may one day achieve clinical acceptance.
Academic text (1995) -
This is called the impedance of the device.
-
So basically impedance is just a resistance that depends on frequency.
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In order to improve performance, low-impedance on-chip driver circuits should be used.
Academic text (1995) -
The driver circuit output has 10-ohm impedance and 100-ps rise time.
Academic text (1995) -
Most of the electrons are collected by the high-impedance reverse-biased collector junction.
Academic text (1997) -
The microstrip transmission line impedance was verified to be 50 ohms out to 3 GHz.
Academic text (1995) -
Headphones' frequency response range is 15-20000Hz, impedance of 32 ohms, sensitivity 108dB, very easy to drive.
Blog text (10) -
The defibrillator instantaneously measures chest impedance and automatically optimizes the shape of the waveform for each patient.
Synonyms
46
4.4
How much a material reduces electric current
1
3.9
The amount a material stops or slows the flow of electric current
How much a material stops electric current from flowing
A measure of how much a wire or part stops electric current, shown in ohms
Compounds
Surface Forms
Morphology
Etymology
Impedance comes from the word impede, which has old parts im- and ped meaning 'in' and 'foot', so picture a tied foot that stops you moving. So impedance is how much something 'stops' or slows the flow of electric current.