n选1开关电路设计

Design of Switch Circuit of One Chosen from N

针对学生在实习中电度表校验装置负荷电流的选通线路故障而使互感器烧毁问题,现设计一运用交流接触器控制n个开关组合、只允许一个开关工作(导通)的线路,在实际应用中取得了理想的效果。

In the experiment by students, the mutual inductor is always burned due to the breakdown of gate circuit of load current in the electric meter. The method of applying AC eontaetor to eontroUing n switches in which only one switch is conducted, gets ideal effect in practice.