HUANG Yu-hang, LIU Min-jian, HE Guo-ying. A New Type of Dialing Supervisor[J]. Journal of Mine Automation, 2002, 28(4): 30-32.
Citation: HUANG Yu-hang, LIU Min-jian, HE Guo-ying. A New Type of Dialing Supervisor[J]. Journal of Mine Automation, 2002, 28(4): 30-32.
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A New Type of Dialing Supervisor

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  • The paper mainly introduced the designing scheme and operating principle of a kind of dialing supervisor connected between the city telephone lines and the telephone sets.
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