通常情况下,扬声器的电阻是较为稳定的,不随频率变化而变化。 (2)电抗(Reactance):电抗是指扬声器对交流电信号的阻碍程度,它包括电感和电容的影响。电感导致阻抗随频率增加而增加,而电容导致阻抗随频率增加而减小。电抗以欧姆(Ω)为单位表示。 它并非在所有频率下都保持恒定。实际上,大多数扬声器的阻抗对频率具有一定...
(2)电抗(Reactance):电抗是指扬声器对交流电信号的阻碍程度,它包括电感和电容的影响。电感导致阻抗随频率增加而增加,而电容导致阻抗随频率增加而减小。电抗以欧姆(Ω)为单位表示。 它并非在所有频率下都保持恒定。实际上,大多数扬声器的阻抗对频率具有一定的依赖性。这是因为扬声器设计需要考虑到音频信号的频率响应和声...
while reactance can be either positive or negative. Resistance in a circuit dissipates power as heat, while reactance stores energy in the form of an electric or magnetic field.
阻抗是一个电路元件对交流电流流动的阻碍程度的度量，它包括了电阻和电抗两个部分。电抗是对电流响应的频率依赖性的度量，包括电感抗（Inductive reactance）和电容抗（Capacitive reactance）。电抗的单位为欧姆（Ω）。阻抗的计算是在复数域进行的，其中包括了实部（电阻）和虚部（电抗）。阻抗可以表示为复数...
In the world of electrical circuits, reactance and impedance play vital roles. Reactance refers to the opposition encountered by inductors and capacitors when connected to AC. On the other hand, impedance encompasses both resistance and reactance, offering a holistic measurement of opposition in AC ci...
= 1/jwC = -j(1/wC)電阻和電感串聯電路之阻抗 Z = R + jwL = |Z| . (cos + j . sin)電阻和電容串聯電路之阻抗 Z = R + (1/jwC)阻抗為向量,所以電壓變化時的電流變化也是向量.阻抗就是由電阻(Resistance)+電抗(Reactance)所組成,電抗又分成感抗(Inductive Reactance)和容抗(Capacitive Reactance),...
Impedance and Reactance http://www.kpsec.freeuk.com/imped.htm mpedance | Reactance | Input Impedance | Output Impedance | Voltage Divider Next Page: 555 and 556 Timer Circuits Also See: Capacitance | Resistance | Ohm's Law | Voltage Dividers Impedance Impedance (symbol Z) is a measure of...
Reactance and impedance-3Owen Bishop
Impedance consists of resistance, reactance, inductance, or capacitance. The resistance due to the inductive and condenser characteristics of a circuit is called reactance. There's more to see -- the rest of this topic is available only to subscribers....
Mathematically, phase differences are most readily dealt with using complex numbers. Impedance, Z, can be calculated from the equation: Z = R + jX where R is resistance, j is √-1, and X is reactance. The reactance - the frequency dependent part of impedance - of different electrical devi...