開(kai)關(guan)電(dian)源(yuan)適(shi)配(pei)器(qi)在(zai)工(gong)作(zuo)過(guo)程(cheng)中(zhong)
，如(ru)果(guo)因(yin)為(wei)電(dian)磁(ci)兼(jian)容(rong)設(she)計(ji)沒(mei)有(you)到(dao)位(wei)，那(na)麼(me)便(bian)很(hen)容(rong)易(yi)受(shou)到(dao)電(dian)磁(ci)幹(gan)擾(rao)並(bing)出(chu)現(xian)故(gu)障(zhang)。其(qi)實(shi)，很(hen)多(duo)工(gong)程(cheng)師(shi)可(ke)能(neng)並(bing)不(bu)了(le)解(jie)的(de)一(yi)點(dian)是(shi)，恰(qia)恰(qia)是(shi)開(kai)關(guan)電(dian)源(yuan)內(nei)部(bu)的(de)開(kai)關(guan)電(dian)路(lu)也(ye)同(tong)樣(yang)是(shi)主(zhu)要(yao)的(de)電(dian)磁(ci)幹(gan)擾(rao)源(yuan)之(zhi)一(yi)，也(ye)同(tong)樣(yang)是(shi)需(xu)要(yao)及(ji)時(shi)采(cai)取(qu)相(xiang)關(guan)措(cuo)施(shi)進(jin)行(xing)控(kong)製(zhi)的(de)。

開關電源的內部核心構造主要由開關管和高頻變壓器組成。這種組織結構在工作中所產生的dv/dt是(shi)具(ju)有(you)較(jiao)大(da)輻(fu)度(du)的(de)脈(mai)衝(chong)，頻(pin)帶(dai)較(jiao)寬(kuan)且(qie)諧(xie)波(bo)豐(feng)富(fu)

，這(zhe)也(ye)就(jiu)是(shi)對(dui)開(kai)關(guan)電(dian)源(yuan)適(shi)配(pei)器(qi)造(zao)成(cheng)電(dian)磁(ci)幹(gan)擾(rao)的(de)問(wen)題(ti)所(suo)在(zai)。在(zai)工(gong)作(zuo)中(zhong)，這(zhe)種(zhong)脈(mai)衝(chong)幹(gan)擾(rao)產(chan)生(sheng)的(de)主(zhu)要(yao)原(yuan)因(yin)主(zhu)要(yao)有(you)以(yi)下(xia)兩(liang)點(dian)：

最(zui)常(chang)見(jian)的(de)一(yi)種(zhong)原(yuan)因(yin)是(shi)開(kai)關(guan)電(dian)路(lu)的(de)開(kai)關(guan)管(guan)負(fu)載(zai)為(wei)高(gao)頻(pin)變(bian)壓(ya)器(qi)初(chu)級(ji)線(xian)圈(quan)
，進(jin)而(er)變(bian)成(cheng)感(gan)性(xing)負(fu)載(zai)。在(zai)開(kai)關(guan)管(guan)導(dao)通(tong)瞬(shun)間(jian)，初(chu)級(ji)線(xian)圈(quan)產(chan)生(sheng)很(hen)大(da)的(de)湧(yong)流(liu)，並(bing)在(zai)初(chu)級(ji)線(xian)圈(quan)的(de)兩(liang)端(duan)出(chu)現(xian)較(jiao)高(gao)的(de)浪(lang)湧(yong)尖(jian)峰(feng)電(dian)壓(ya)。而(er)在(zai)開(kai)關(guan)管(guan)斷(duan)開(kai)瞬(shun)間(jian)，由(you)於(yu)初(chu)級(ji)線(xian)圈(quan)的(de)漏(lou)磁(ci)通(tong)，致(zhi)使(shi)一(yi)部(bu)分(fen)能(neng)量(liang)沒(mei)有(you)從(cong)一(yi)次(ci)線(xian)圈(quan)傳(chuan)輸(shu)到(dao)二(er)次(ci)線(xian)圈(quan)，儲(chu)藏(zang)在(zai)電(dian)感(gan)中(zhong)的(de)這(zhe)部(bu)分(fen)能(neng)量(liang)將(jiang)和(he)集(ji)電(dian)極(ji)電(dian)路(lu)中(zhong)的(de)電(dian)容(rong)、電dian阻zu形xing成cheng帶dai有you尖jian峰feng的de衰shuai減jian振zhen蕩dang，疊die加jia在zai關guan斷duan電dian壓ya上shang，形xing成cheng關guan斷duan電dian壓ya尖jian峰feng。這zhe種zhong電dian源yuan電dian壓ya中zhong斷duan會hui產chan生sheng與yu初chu級ji線xian圈quan接jie通tong時shi一yi樣yang的de磁ci化hua衝chong擊ji電dian流liu瞬shun變bian，這zhe個ge噪zao聲sheng會hui傳chuan導dao到dao輸shu入ru輸shu出chu端duan，形xing成cheng傳chuan導dao幹gan擾rao，重zhong者zhe有you可ke能neng擊ji穿chuan開kai關guan管guan。

第二種比較常見的原因是脈衝變壓器初級線圈

、kaiguanguanhelvbodianronggouchengdegaopinkaiguandianliuhuanluzhong
，kenenghuichanshengjiaodadekongjianfushe，bingjinyibuxingchengfusheganrao。ruguodianronglvborongliangbuzuhuogaopintexingbuhao
，dianrongshangdegaopinzukanghuishigaopindianliuyichamofangshichuandaodaojiaoliudianyuanzhongxingchengchuandaoganrao。

在zai了le解jie了le開kai關guan電dian源yuan內nei部bu的de開kai關guan電dian路lu會hui形xing成cheng電dian磁ci幹gan擾rao問wen題ti後hou

，工gong程cheng師shi可ke以yi在zai設she計ji開kai關guan電dian源yuan適shi配pei器qi的de過guo程cheng中zhong，有you重zhong點dian的de進jin行xing抗kang幹gan擾rao強qiang化hua，防fang止zhi內nei部bu產chan生sheng的de電dian磁ci幹gan擾rao波bo對dui適shi配pei器qi正zheng常chang的de工gong作zuo造zao成cheng影ying響xiang。

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