符合/反符合实验电路的开发及教学实践  

Development of a coincidence and anti-coincidence experimental circuit and teaching study

作　　者：冯启春[1] 任延宇[1] 霍雷[1] 王清尚 FENG Qichun;REN Yanyu;HUO Lei;WANG Qingshang(Department of Modern Physics,School of Physics,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学物理学院近代物理系,黑龙江哈尔滨150001

出　　处：《物理实验》2023年第12期20-24,共5页Physics Experimentation

基　　金：中央高校基本科研业务费专项资金资助(No.2023FRFK06009)。

摘　　要：设计了以单稳态触发器为核心元件的符合/反符合核电子学实验电路,该电路在使用上,一方面可选择矩形脉冲输入信号,通过信号的上升沿和下降沿触发不同的单稳态触发器,2个单稳态的输出构成了2路有时间间隔的输入信号,单稳态的输出脉冲宽度为成形时间;另一方面,可用单稳态输出信号的后沿去触发下一级电路,实现延迟时间为单稳态宽度的输出信号.教学实践表明:该电路能够很好地完成相关实验教学,并能够让学生更好地熟悉和掌握符合、反符合、延迟符合、延迟反符合电路的特点.Coincidence and anti-coincidence nuclear electronics experimental circuit with a monostable multivibrator as the core component was designed.On the one hand,a rectangular pulse input signal was selected,and different monostable multivibrators were triggered by the rising and falling edges of the signal.The two monostable outputs formed two input signals with a certain time interval,the output pulse width of the monostable state was the forming time;On the other hand,the trailing edge of the monostable output signal was used to trigger the next level circuit,achieving an output signal with a delay time of monostable width.It was proved through practice that the relevant experimental teaching could be well completed,which could make students easily familiar with and master the characteristics of coincidence,anti-coincidence,delayed coincidence,and delayed anti-coincidence circuits.

关 键 词：核电子学实验 符合 反符合 延迟 

分 类 号：TN786[电子电信—电路与系统] O571.3[理学—粒子物理与原子核物理]