1电容对交变电流的影响1)电路图1如图1所示,设电容器的电容为C,则接直流电源时I1=0,接频率为f的交流电源时I2=R+UXC.接交流电源时,电流能“通过”电容器,是指电容器在充放电过程中,电路就有了电流,表现为交流“通过”了电容器,事实上电流也并未通过电容器.2)容抗电容器对交流电 1 Capacitance of alternating current 1) Circuit 1 As shown in Figure 1, the capacitor is set to C, then connected to the DC power supply I1 = 0, then the frequency of the AC power supply f I2 = R + UXC. AC When the power supply, the current “through” the capacitor, refers to the capacitor in the charge and discharge process, the circuit has a current, the performance of the AC “through” the capacitor, in fact, the current did not pass through the capacitor.2) capacitive reactance to the AC