This paper introduces the characteristics and principle of FSK power line transceiver ST7540, and gives an(applied) electric circuit of ST7540.

介绍了新型单片式FSK电力线收发器ST7540的特点及工作原理，并给出基于ST7540的应用电路。

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An intelligent electricity-filch monitoring device based on power line transmission technology is introduced, which consists of monitoring unit, CPU, power line transceiver and so on.

基于电力线传输技术的智能防窃电装置由监测单元、中央处理单元和电力线收发器等硬件组成。

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For example, the RF output line may be coupled to a switch, which is controlled based on control information, e. g., received from the transceiver.

例如，射频输出线可以耦合到开关，这个开关基于控制信息而被控制，例如，从收发信机接收的控制信息。

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For example, the RF output line may be coupled to a switch, which is controlled based on control information, e. g., received from the transceiver.

例如，射频输出线可以耦合到开关，这个开关基于控制信息而被控制，例如，从收发信机接收的控制信息。

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