Starting-up control circuit
一种开机控制、电路的技术,应用在数据处理电源、电数字数据处理、测量装置等方向,能够解决不是很方便等问题
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[0017] Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:
[0018] The start-up control circuit of the present invention is arranged inside the display, and uses the VGA connector 1 of the display to realize the purpose of controlling start-up. The following will first briefly describe the VGA connector:
[0019] Please refer to figure 1 , the VGA connector 1 includes fifteen pins, and the boot control circuit of the present invention only needs to use the twelfth pin P12 of the VGA connector 1 ( figure 1 Only the twelfth pin P12 is identified in ). The twelfth pin P12 is an address code pin. According to the VGA specification, when the power button of the display is pressed, the twelfth pin P12 outputs a high level signal; Pin P12 outputs a low level signal.
[0020] Please continue to refer figure 1 , A preferred implementation of the start-up control circuit includes triodes Q1-Q5 and a 555 time...
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