如果屏蔽和测量仪器之间存在一个交流电势差，则可能有电容性电流通过测量电路，增大干扰。
If there is an ac potential difference between the shield and the measuring instrument, there may be capacitive currents flowing through the measuring circuit that will add interference.
仿真分析在设计中发挥了重要的指导性作用——它优化了激光器接口电路的布线，确定了去耦电容的位置分布和大小选择。
Simulation plays an important role in the design, which optimizes the circuit design of laser interface and confirms the location and value of decouple capacitors.
后者电路呈电容性，不仅回路电流大，且电感、电容上产生过电压。
Under the latter condition, the circuit is capacitive, with large loop current and over-voltages on the inductance and the capacitance.
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