在基於可控矽設計的脈衝觸發電路係統中
，大多數的晶閘管幹擾表現為瞬時尖峰信號的形式，也就是讓不少工程師深惡痛絕的“尖峰毛刺”。當(dang)這(zhe)種(zhong)毛(mao)刺(ci)的(de)幅(fu)值(zhi)和(he)能(neng)量(liang)達(da)到(dao)一(yi)定(ding)程(cheng)度(du)時(shi)，就(jiu)極(ji)易(yi)導(dao)致(zhi)可(ke)控(kong)矽(gui)導(dao)通(tong)，造(zao)成(cheng)嚴(yan)重(zhong)損(sun)壞(huai)並(bing)導(dao)致(zhi)脈(mai)衝(chong)觸(chu)發(fa)係(xi)統(tong)不(bu)能(neng)正(zheng)常(chang)運(yun)行(xing)。這(zhe)種(zhong)情(qing)況(kuang)尤(you)其(qi)在(zai)現(xian)場(chang)環(huan)境(jing)比(bi)較(jiao)惡(e)劣(lie)
、ermaichongbenshenyouweiqiangchufamaichongdetiaojianxiarongyichuxian。zheshiyinweiwaijieduimaichongxitongjimaichongxianghujiandeganraodoufeichangda，chuyuzhezhongqingkuangxiadekekongguiyuanjianruguomeiyoudianluneibudebaohucuoshi，henrongyisunhuai，ergaiqingkuangxiaxitongdekangganraonengliqiangruoyezhengnenghengliangchugongchengshisuoshejidekangganraocuoshishifoujuyoulianghaodeshijiyingyongxiaoguo。

就(jiu)目(mu)前(qian)工(gong)控(kong)以(yi)及(ji)通(tong)訊(xun)領(ling)域(yu)的(de)可(ke)控(kong)矽(gui)脈(mai)衝(chong)觸(chu)發(fa)電(dian)路(lu)應(ying)用(yong)情(qing)況(kuang)來(lai)看(kan)，脈(mai)衝(chong)係(xi)統(tong)中(zhong)對(dui)可(ke)控(kong)矽(gui)的(de)幹(gan)擾(rao)主(zhu)要(yao)有(you)兩(liang)類(lei)
，一(yi)類(lei)是(shi)脈(mai)衝(chong)係(xi)統(tong)內(nei)的(de)相(xiang)互(hu)幹(gan)擾(rao)
，另(ling)一(yi)類(lei)則(ze)是(shi)外(wai)部(bu)幹(gan)擾(rao)源(yuan)對(dui)脈(mai)衝(chong)係(xi)統(tong)的(de)幹(gan)擾(rao)。首(shou)先(xian)來(lai)看(kan)脈(mai)衝(chong)係(xi)統(tong)內(nei)的(de)相(xiang)互(hu)幹(gan)擾(rao)情(qing)況(kuang)
，這(zhe)類(lei)幹(gan)擾(rao)主(zhu)要(yao)由(you)共(gong)用(yong)的(de)電(dian)源(yuan)和(he)地(di)引(yin)起(qi)，其(qi)實(shi)際(ji)表(biao)現(xian)情(qing)況(kuang)為(wei)一(yi)路(lu)脈(mai)衝(chong)的(de)尖(jian)峰(feng)幹(gan)擾(rao)信(xin)號(hao)在(zai)對(dui)應(ying)於(yu)其(qi)他(ta)幾(ji)路(lu)脈(mai)衝(chong)的(de)時(shi)刻(ke)出(chu)現(xian)。這(zhe)是(shi)因(yin)為(wei)各(ge)路(lu)脈(mai)衝(chong)共(gong)用(yong)一(yi)組(zu)電(dian)源(yuan)，在(zai)一(yi)路(lu)脈(mai)衝(chong)觸(chu)發(fa)時(shi)，瞬(shun)時(shi)功(gong)率(lv)較(jiao)大(da)，將(jiang)電(dian)源(yuan)波(bo)形(xing)拉(la)下(xia)缺(que)口(kou)。同(tong)時(shi)在(zai)地(di)線(xian)上(shang)產(chan)生(sheng)較(jiao)強(qiang)的(de)脈(mai)衝(chong)電(dian)流(liu)
，該(gai)電(dian)流(liu)流(liu)經(jing)地(di)線(xian)上(shang)兩(liang)點(dian)間(jian)將(jiang)產(chan)生(sheng)幹(gan)擾(rao)毛(mao)刺(ci)。若(ruo)接(jie)地(di)沒(mei)處(chu)理(li)好(hao)，該(gai)幹(gan)擾(rao)“毛刺”將通過地線傳至其他路脈衝信號上。這類幹擾的另一原因是印刷電路板上或線槽內兩條平行的信號線的線間分布電容的電容耦合。

接jie下xia來lai我wo們men來lai看kan可ke控kong矽gui組zu成cheng的de脈mai衝chong觸chu發fa電dian路lu中zhong，另ling一yi種zhong常chang見jian的de幹gan擾rao源yuan來lai源yuan
，那na就jiu是shi外wai部bu幹gan擾rao源yuan。通tong常chang外wai部bu幹gan擾rao對dui晶jing閘zha管guan脈mai衝chong係xi統tong的de幹gan擾rao主zhu要yao包bao括kuo兩liang類lei
，一yi是shi設she備bei內nei部bu信xin號hao，如ru脈mai衝chong控kong製zhi櫃gui內nei其qi他ta的de強qiang電dian信xin號hao等deng。二er是shi外wai部bu環huan境jing，如ru大da電dian弧hu電dian流liu產chan生sheng的de劇ju變bian強qiang電dian磁ci場chang、強大的交變電磁場、大功率整流電路的移相控製產生的諧波、斷路器hefenguochengzhongchanshengdeguoyadeng。zhexieganraozhuyaotongguotongdaochuanshuhedianciouhedengfangshiganraomaichongxitong，gongchengshizaijinxingzhengtidianluxitongdeshejishixuyaotebiezhuyi。

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