• Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.

    介绍一种采用CMOS数字电路、数字开关整定辅助电源断电延时继电器组成工作原理

    youdao

  • Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.

    介绍一种采用CMOS数字电路、数字开关整定辅助电源断电延时继电器组成工作原理

    youdao

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