整体思路是利用74ls123单稳态触发器电路 实现电容容值的精确测量相对基于ne555的电容测量仪 提高了测量精度使用电容和电阻控制74ls123的触发电平
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整体思路是利用74ls123单稳态触发器电路 实现电容容值的精确测量相对基于ne555的电容测量仪 提高了测量精度使用电容和电阻控制74ls123的触发电平