本文分析了一种电网电压的监测电路的工作原理。
The paper makes principle analysis of monitoring Circuit of Voltage in Grid.
监测电路包括555红外发射电路，放大电路以及频率译码电路。
The observation circuit consists of 555 infrared emitting circuit, amplifying circuit and frequency decoding circuit.
本文介绍红外线监测电路的原理以及在活塞销电涡探伤仪中的应用。
The principle of infrared observation circuit and its application in piston pin electric eddy-current defectoscope is introduced in this paper.
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