目前,我国电力、内燃和蒸汽机车上均采用汞氙灯作为机车头灯。但该灯传统式的触发器的碎修率较高。其主要原因是触发器的机械振子接点在触发器工作时打火。由于电火花具有位移导电的作用,致使触发器的升压特性受到影响,触发时间变长,容易造成灯泡烧坏、振子接点粘焊或振子簧片过热(退火)失去弹性。多年来,一些专业生产厂和机务段等单位都在研究触发器的改进问题。有的采用了继电器作为振子,使振子的接点增多,总的接点容 At present, China’s power, internal combustion and steam locomotives are used as a locomotive headlamp mercury lamp. However, the light of the traditional flip-flop repair rate is higher. The main reason is that the trigger’s mechanical oscillator contacts ignite while the trigger is operating. Because EDM has the function of displacement conduction, the boosting characteristic of the trigger is affected, the triggering time becomes longer, the bulb burnout easily occurs, the sticking welding of the oscillator contact or the overheating (annealing) of the oscillator reed loses its elasticity. Over the years, some professional production plants and locomotive depots and other units are studying the issue of improving the trigger. Some use of the relay as a vibrator, so that the oscillator contacts increased, the total contact capacity