In the case of ideal operational amplifier, circuit analysis was simplified by the ideal summing point restraints ofzerovoltage and zero current at the inverting input.
对于理想的运算放大器而言，通过倒相输入处零电压和零电流的理想求和点限制，可以简化电路分析过程。
2
There is voltage to ground between ground part of electric equipment and point of zero electric potential of earth.
电气设备的接地部分与大地零电位点之间存在对地电压。
3
Based on switch function model of TCSC and MATLAB, the digital simulation method in researching zero-crossing point characteristic of the capacitor voltage is put forward.