Electrical impedance - Wikipedia, the free encyclopedia
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Electrical impedance , or simply impedance , describes a measure of opposition to a sinusoidal alternating current (AC). Electrical impedance extends the concept of resistance to AC circuits, descr...
en.wikipedia.org/wiki/Electrical_impedance
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The quantity Z is called impedance. For a pure resistor, Z = R. Because the phase affects the impedance and because the contributions of capacitors and inductors differ in phase from resistive components by 90 degrees, a process like vector addition (phasors) is used to develop expressions for impedance.
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hyperphysics.phy-astr.gsu.edu/hbase/electric/imped.html
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impedance: The total passive opposition offered to the flow of electric current. Note 1: Impedance is determined by the particular combination of resistance, inductive reactance, and capacitive reactance in a given circuit.
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www.its.bldrdoc.gov/fs-1037/dir-018/_2678.htm
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ESP - The Audio Pages. Impedance - what it is, what it does, and the effects of impedance on loudspeakers, power loss in cables and more. ... Amplifier Impedance...
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sound.westhost.com/impedanc.htm
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Definition of impedance from Webster's New World College Dictionary. Meaning of impedance. Pronunciation of impedance. Definition of the word impedance. Origin of the word impedance. ... Dictionary Home » Webster's New World College Dictionary » impedance...
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www.yourdictionary.com/impedance
www.yourdictionary.com/impedance
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Cable impedance explained. ... What is the cable impedance and when it is needed? ... The key tenet of all transmission line theory is that the source impedance must be equal to the load impedance in order to achieve maximum power transfer and minimum signal reflection at the destination.
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www.epanorama.net/documents/wiring/cable_impedance.html
www.epanorama.net/documents/wiring/cable_impedance.html
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impedance n. ( Symbol Z ) A measure of the total opposition to current flow in an alternating current circuit, made up of two components, ohmic ... Modern Science: impedance...
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www.answers.com/topic/impedance
www.answers.com/topic/impedance
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Complex Impedance Series RLC Circuit ... This changes the phase angle and the total impedance. If XL and XC are equal, the total impedance will be equal to the value of the resistance and the phase angle will be zero.
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www.bcae1.com/compleximpedance.htm
www.bcae1.com/compleximpedance.htm
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