- [Load Box Solution]电阻与阻抗之概念的不同2020-03-26 11:39
- 谈到线材的阻抗对声音信号的干扰，许多人觉得不可思议。因为我们用欧姆表测量线材的电阻时，线材的电阻往往在欧姆级甚至毫欧姆级，电流流过这么小的电阻时怎么会产生这么大的变化呢?或者确切地说电压降低了。要搞清这个问题，首先要区分开导线的电阻与阻抗两个不同的概念。 电阻与电抗的定义 在具有电阻、电感和电容的电路里，对电路中的电流所起的阻碍作用叫做阻抗。阻抗常用Z表示，是一个复数，实部称为电阻，虚部称为电抗，其中电容在电路中对直流电所起的阻碍作用称为容抗 ,电感在电路中对交流电所起的阻碍
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