输出阻抗 Output impedance
（重定向自Output resistance）
输出阻抗（英语：output impedance），或称内阻（internal impedance），是指电路负载从电路输出端口反着看进电路时电路所等效的阻抗。
Output resistance
中文百科
英语百科
Output impedance 输出阻抗
（重定向自Output resistance）
![](/Images/godic/202501/31/Source_and_load_circuit_Z0623.png")
![Innen- und Außenwiderstand eines elektrischen Gerätes](/Images/godic/202501/31/Quelle_Ri.svg0623.png")
![Die Impedanzen: Hier Ri-Betrachtung](/Images/godic/202501/31/EingangswiderstandAusgangswiderstandA.svg0623.png")
The output impedance, source impedance, or internal impedance of an electronic device is the opposition exhibited by its output terminals to an alternating current (AC) of a particular frequency as a result of resistance, inductance and capacitance. It is the Thévenin equivalent impedance looking back into the output terminals.
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