介绍了雷达发射机中撬棒电路的作用和实现方法，以及撬棒电路的种类和不同的工作方式。在实验的基础上分析了各种撬棒保护电路的工作原理，对比了不同工作方式下的撬棒电路的优缺点，提出了一种新型自触发撬棒电路，该电路具有简单、可靠、延时时间短、体积功耗小等优点，可减少发射管的灌入能量，从而保护发射管。

This paper introduces the functioning of crow ba r circuit and its realization method, introduces different kinds of crowbar cir cuit and different working mode. On the basis of experiment, we analyze the prin ciple of different kinds of crowbar circuit, compare the characteristics of diff erent kinds of working mode, and put forward a new auto-triggered crowbar circu it, which has advantages of simplicity, reliability, short delay time, small siz e etc. This circuit can reduce the breathed energy into transmitter tube.

TN958 TN838