AC Thevenin's Theorem

交流Thevenin定理

Any combination of sinusoidal AC sources and impedances with two terminals can be replaced by a single voltage source e and a single series impedance z. The value of e is the open circuit voltage at the terminals, and the value of z is e divided by the current with the terminals short circuited. In this case, that impedance evaluation involves a series-parallel combination.

任何具有两个端子的正弦交流电源和阻抗的组合都可以用一个电压源e和一个串联阻抗z代替。e的值是端子的开路电压，而z的值是端子短路时电流除以e。在这种情况下，该阻抗的计算涉及一个串并联组合。

诺顿电压

Thévenin电阻

数值例子

诺顿等效电路

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Index

AC circuit concepts

AC电路概念索引

HyperPhysics***** Electricity and Magnetism

HyperPhysics ***** 电学和磁学

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AC Thevenin Example

交流Thévenin示例

To replace a network by its Thevenin equivalent, compute the Thevenin voltage: the output of the voltage divider formed by Z₁ and Z₃ . The Thevenin impedance is the impedance looking back from AB with V₁ replaced by a short circuit and is therefore a a series-parallel combination.

为了将网络用其Thevenin等效电路代替，需计算Thevenin电压：由Z1和Z3组成的电压分压器的输出。Thevenin阻抗是从AB看回的阻抗，此时V1被替换为短路，因此它是一个串并联组合。