Analyze the circuit method(2)

AC equivalent circuit analysis：

Ac equivalent circuit analysis is one way to separate the AC system from the circuit and analyze it separately.

In AC equivalent analysis, the AC equivalent circuit diagram should be drawn first. The following principles should be followed in drawing the AC equivalent circuit: the power supply is regarded as a short circuit, the capacitor of AC bypass is viewed as a short circuit and the straight coupler is regarded as a short circuit.