The act of impeding; that which impedes; a hindrance.
Used in a Sentence
impedances
Definitions, parts of speech, synonyms, and sentence examples for impedances.
Editorial note
The math is exactly the same as for DC once you substitute complex numbers for current, voltage and impedances.
Examples16
Definitions4
Parts of speech1
Quick take
The act of impeding; that which impedes; a hindrance.
Meaning at a glance
The clearest senses and uses of impedances gathered in one view.
(physics, usually with “acoustic” or “sound”) the ratio of sound pressure to volume flow rate treated as complex quantities.
(physics) A quantity analogous to electrical impedance in some other energy domain
Definitions
Core meanings and parts of speech for impedances.
noun
The act of impeding; that which impedes; a hindrance.
noun
(physics, usually with “acoustic” or “sound”) the ratio of sound pressure to volume flow rate treated as complex quantities.
noun
(physics) A quantity analogous to electrical impedance in some other energy domain
noun
(physics) A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, and inductive and capacitive reactances; the ratio of voltage to current treated as complex quantities.
Example sentences
The math is exactly the same as for DC once you substitute complex numbers for current, voltage and impedances.
Then manufacturers adopted standards for input impedances and interconnects, and this made the buying decision less fraught.
My impression of the two systems has always been that they're at best complimentary, with some impedances between the two.
Output transformers, if they have multiple taps in the secondary winding, do allow for different impedances.
So to understand the frequency response you need to understand the acoustic, mechanical, and electrical impedances.
If you have a tool like Altium, managing all the impedances, trace widths and lengths, differential pairs becomes a cake walk.
Of course lower losses imply higher impedances which generally result in higher static sensitivity.
The finite grid of resistors (or arbitrary impedances) is actually of great practical usefulness.
We don't need to engage in wars ourselves, but we can put serious impedances against their plans.
Basically when you connect two transmission lines (like coax cables), you need to match their impedances so the signal does not bounce back.
At any half wavelength, the output and input have equal impedances.
You need batteries with similar internal impedances or undesirable things happen.
Quote examples
Maybe one day I will actually understand signal integrity but so far my experience has been "check return paths, match impedances and pray to the EE gods".
DT770 are available with different impedances and 250Ω will be too high for low-voltage outputs, I often have to run my Phone / Laptop almost on "full volume" to compensate, so better buy the 32Ω version.
(look up total internal reflection on Wikipedia) -By placing three mediums with different impedances in sequence, you can promote an "evanescent" (non-propagating) nearfield wave to partially couple into the the third medium.
If we used more "appropriate" physical units at each step of the signal chain, it would be impossible to determine this number quickly or in your head; and would involve taking into account even more factors I haven't mentioned (like input impedances).
Frequently asked questions
Short answers drawn from the clearest meanings and examples for this word.
How do you use impedances in a sentence?
The math is exactly the same as for DC once you substitute complex numbers for current, voltage and impedances.
What does impedances mean?
The act of impeding; that which impedes; a hindrance.
What part of speech is impedances?
impedances is commonly used as noun.