晶闸管相控调压技术在电工行业的应用越来越多,在这类设备的维修中经常要更换晶闸管。在更换之前必须仔细检查损坏的原因,看是属于晶闸管本身的质量性能问题呢,还是由于其他因素引起的。若属于前者,换上新的就完成了修的任务;若属于后者,则不能一换了之,因为引起损坏的根源没有排除,换 Thyristor phase-controlled voltage regulator technology in the electrical industry more and more applications, often in the repair of such equipment to replace the thyristor. Prior to replacement must be carefully examined the reasons for the damage to see the quality performance of the thyristor itself is the problem, or due to other factors. If the former belongs to the new to complete the repair task; if the latter, you can not change it, because the root cause of the damage is not ruled out, for