该衰减电路是一种降低静电计交流响应的低通滤波器，使我们可以准确地进行直流弱电流的测量。

A damping circuit is a type of low pass filter that reduces the electrometer's ac response so the low DC current can be measured accurately.

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本文重点阐述LH集成电路与保护信号装置原理，并分析弱电保护干扰问题及抗干扰措施。

In this paper, the principles of LH integrated circuit and signalling are introduced. The problems of disturbance and adopted measures against disturbance are also analyzed.

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通过试验研究了弱电设备电气连线、制电路板及低压系统保险丝管等耐受雷电流的能力。

Lightning current withstand capacity test of electronic equipment wires and fuse links in low voltage power systems is conducted in laboratory.

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