随着电子工业的不断发展,汽车电系中也越来越多的采用电子器件。对于半导体器件来说,当受到瞬变电压时将显示出不同程度的敏感性,在某一水平下不会造成损坏,而超过某一水平就会导致完全毁坏,所以国外对汽车电系中瞬变过电压抑制保护的问题早有研究,特别在硅整流交流发电机得到广泛应用后,这个问题显得格外突出,因为交流发电机与直流发 With the continuous development of the electronics industry, more and more electronic components are used in automotive electrical systems. For semiconductor devices, when subjected to transient voltage will show varying degrees of sensitivity, at a certain level will not cause damage, while more than a certain level will result in complete destruction, so foreign to the automotive electrical system in the moment The problem of changing the voltage suppression protection has been studied for a long time, especially after the silicon rectifier alternator has been widely used, this issue is particularly outstanding because the alternator and the DC