[7]二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)雙向(xiang)(xiang)(xiang)觸(chu)發二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)將萬(wan)用(yong)(yong)表(biao)(biao)(biao)置于(yu)相應的(de)(de)(de)(de)(de)(de)直(zhi)流(liu)電(dian)(dian)(dian)壓(ya)擋(dang)，測(ce)試電(dian)(dian)(dian)壓(ya)由(you)兆歐表(biao)(biao)(biao)提供。[8]測(ce)試時，搖動(dong)兆歐表(biao)(biao)(biao)，萬(wan)同樣(yang)的(de)(de)(de)(de)(de)(de)方法(fa)測(ce)出VBR值(zhi)(zhi)。后將VBO與(yu)VBR進行比較(jiao)，兩者的(de)(de)(de)(de)(de)(de)較(jiao)為值(zhi)(zhi)之差(cha)越(yue)小，說(shuo)(shuo)明(ming)被測(ce)雙向(xiang)(xiang)(xiang)觸(chu)發二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)對(dui)稱性(xing)越(yue)好。[8]二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)瞬態電(dian)(dian)(dian)壓(ya)抑制(zhi)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)用(yong)(yong)萬(wan)用(yong)(yong)表(biao)(biao)(biao)測(ce)量管(guan)(guan)(guan)(guan)(guan)子的(de)(de)(de)(de)(de)(de)好壞對(dui)于(yu)單(dan)要極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)型的(de)(de)(de)(de)(de)(de)TVS，按照測(ce)量普通(tong)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)方法(fa)，可測(ce)出其(qi)(qi)正、反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)阻(zu)(zu)，一(yi)般正向(xiang)(xiang)(xiang)電(dian)(dian)(dian)阻(zu)(zu)為4kΩ左右(you)，反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)阻(zu)(zu)為無(wu)窮(qiong)(qiong)大。[8]對(dui)于(yu)雙向(xiang)(xiang)(xiang)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)型的(de)(de)(de)(de)(de)(de)瞬態電(dian)(dian)(dian)壓(ya)抑制(zhi)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)，任意調換紅、黑(hei)表(biao)(biao)(biao)筆測(ce)量其(qi)(qi)兩引(yin)腳間(jian)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)阻(zu)(zu)值(zhi)(zhi)均應為無(wu)窮(qiong)(qiong)大，否則(ze)，說(shuo)(shuo)明(ming)管(guan)(guan)(guan)(guan)(guan)子性(xing)能(neng)不良或已經損壞。[8]二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)高頻變(bian)(bian)阻(zu)(zu)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)識(shi)別正、負(fu)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)高頻變(bian)(bian)阻(zu)(zu)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)與(yu)普通(tong)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)在(zai)外(wai)觀上的(de)(de)(de)(de)(de)(de)區別是其(qi)(qi)色(se)(se)標(biao)顏(yan)色(se)(se)不同，普通(tong)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)色(se)(se)標(biao)顏(yan)色(se)(se)一(yi)般為黑(hei)色(se)(se)，而高頻變(bian)(bian)阻(zu)(zu)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)色(se)(se)標(biao)顏(yan)色(se)(se)則(ze)為淺色(se)(se)。其(qi)(qi)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)性(xing)規(gui)律與(yu)普通(tong)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)相似，即帶(dai)綠(lv)(lv)色(se)(se)環的(de)(de)(de)(de)(de)(de)一(yi)端為負(fu)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)，不帶(dai)綠(lv)(lv)色(se)(se)環一(yi)端為正極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)。[8]二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)變(bian)(bian)容(rong)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)將萬(wan)用(yong)(yong)表(biao)(biao)(biao)紅、黑(hei)表(biao)(biao)(biao)筆怎樣(yang)對(dui)調測(ce)量，變(bian)(bian)容(rong)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)兩引(yin)腳間(jian)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)阻(zu)(zu)值(zhi)(zhi)均應為無(wu)窮(qiong)(qiong)大。如果(guo)在(zai)測(ce)量中，發現萬(wan)用(yong)(yong)表(biao)(biao)(biao)指針向(xiang)(xiang)(xiang)右(you)有輕(qing)微擺動(dong)或阻(zu)(zu)值(zhi)(zhi)為零，說(shuo)(shuo)明(ming)被測(ce)變(bian)(bian)容(rong)二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)有漏電(dian)(dian)(dian)故障或已經擊穿壞。[8]二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)單(dan)色(se)(se)發光二(er)(er)(er)極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)在(zai)萬(wan)用(yong)(yong)表(biao)(biao)(biao)外(wai)部附(fu)接一(yi)節(jie)能(neng)，將萬(wan)用(yong)(yong)表(biao)(biao)(biao)置R×10或R×100擋(dang)。晶(jing)閘(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)門極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)G和陰極(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)K與(yu)控制(zhi)晶(jing)閘(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)裝(zhuang)置連接，組(zu)成(cheng)晶(jing)閘(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)控制(zhi)電(dian)(dian)(dian)路。福(fu)建ABB可控硅（晶(jing)閘(zha)管(guan)(guan)(guan)(guan)(guan)）Infineon全新原裝(zhuang)

美國通用(yong)(yong)電(dian)(dian)(dian)(dian)氣公司研發(fa)了世界上(shang)個以(yi)硅(gui)(gui)單晶(jing)(jing)(jing)(jing)(jing)為半導體整流(liu)(liu)(liu)(liu)材料的(de)(de)(de)(de)(de)(de)硅(gui)(gui)整流(liu)(liu)(liu)(liu)器(qi)（SR），1957年(nian)又開發(fa)了全球(qiu)較早(zao)用(yong)(yong)于功(gong)(gong)率(lv)(lv)(lv)轉換和(he)控(kong)(kong)制的(de)(de)(de)(de)(de)(de)可(ke)控(kong)(kong)硅(gui)(gui)整流(liu)(liu)(liu)(liu)器(qi)（SCR）。由(you)(you)于它們具有體積(ji)小、重量輕、效率(lv)(lv)(lv)高(gao)、壽(shou)命(ming)長的(de)(de)(de)(de)(de)(de)優勢，尤其(qi)(qi)(qi)是SCR能(neng)(neng)以(yi)微小的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)控(kong)(kong)制較大(da)的(de)(de)(de)(de)(de)(de)功(gong)(gong)率(lv)(lv)(lv)，令半導體電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子(zi)器(qi)件成(cheng)(cheng)功(gong)(gong)從弱電(dian)(dian)(dian)(dian)控(kong)(kong)制領(ling)域(yu)(yu)進入(ru)了強電(dian)(dian)(dian)(dian)控(kong)(kong)制領(ling)域(yu)(yu)、大(da)功(gong)(gong)率(lv)(lv)(lv)控(kong)(kong)制領(ling)域(yu)(yu)。在(zai)(zai)整流(liu)(liu)(liu)(liu)器(qi)的(de)(de)(de)(de)(de)(de)應(ying)用(yong)(yong)上(shang)，晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)迅速取代了**整流(liu)(liu)(liu)(liu)器(qi)（引燃管(guan)(guan)(guan)(guan)），實(shi)現整流(liu)(liu)(liu)(liu)器(qi)的(de)(de)(de)(de)(de)(de)固(gu)體化(hua)、靜止化(hua)和(he)無觸點(dian)化(hua)，并(bing)獲得(de)巨(ju)大(da)的(de)(de)(de)(de)(de)(de)節能(neng)(neng)效果(guo)。從1960年(nian)代開始，由(you)(you)普(pu)通晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)相繼衍生出了快速晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)、光控(kong)(kong)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)、不(bu)(bu)對稱晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)及雙向晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)等各(ge)種特(te)性的(de)(de)(de)(de)(de)(de)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)，形成(cheng)(cheng)一(yi)個龐大(da)的(de)(de)(de)(de)(de)(de)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)家族。晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)在(zai)(zai)應(ying)用(yong)(yong)中有效率(lv)(lv)(lv)高(gao)、控(kong)(kong)制特(te)性好、壽(shou)命(ming)長、體積(ji)小、功(gong)(gong)能(neng)(neng)強等優點(dian)，其(qi)(qi)(qi)能(neng)(neng)承受的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)和(he)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)容量是目前電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子(zi)器(qi)件中**高(gao)的(de)(de)(de)(de)(de)(de)，而且工(gong)作可(ke)靠。因晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)上(shang)述優點(dian)，國外(wai)對晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)在(zai)(zai)脈沖功(gong)(gong)率(lv)(lv)(lv)源(yuan)領(ling)域(yu)(yu)內應(ying)用(yong)(yong)的(de)(de)(de)(de)(de)(de)研究做(zuo)了大(da)量的(de)(de)(de)(de)(de)(de)工(gong)作，很多脈沖功(gong)(gong)率(lv)(lv)(lv)能(neng)(neng)源(yuan)模塊已經使用(yong)(yong)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)作為主(zhu)開關(guan)。而國內的(de)(de)(de)(de)(de)(de)大(da)功(gong)(gong)率(lv)(lv)(lv)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)主(zhu)要應(ying)用(yong)(yong)在(zai)(zai)高(gao)壓(ya)直流(liu)(liu)(liu)(liu)輸電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)工(gong)頻(pin)(pin)環境(jing)下(xia)(xia)(xia)，其(qi)(qi)(qi)工(gong)頻(pin)(pin)工(gong)作條件下(xia)(xia)(xia)的(de)(de)(de)(de)(de)(de)技術參數指標不(bu)(bu)足以(yi)準確反映其(qi)(qi)(qi)在(zai)(zai)脈沖電(dian)(dian)(dian)(dian)源(yuan)這(zhe)種高(gao)電(dian)(dian)(dian)(dian)壓(ya)、大(da)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)、高(gao)陡度的(de)(de)(de)(de)(de)(de)環境(jing)下(xia)(xia)(xia)的(de)(de)(de)(de)(de)(de)使用(yong)(yong)情況。河南igbt驅動(dong)芯(xin)片可(ke)控(kong)(kong)硅(gui)(gui)（晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)）Mitsubishi三菱全新原裝(zhuang)現貨可(ke)控(kong)(kong)硅(gui)(gui)(Silicon Controlled Rectifier) 簡稱SCR，是一(yi)種大(da)功(gong)(gong)率(lv)(lv)(lv)電(dian)(dian)(dian)(dian)器(qi)元件，也稱晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)。

可(ke)(ke)控(kong)(kong)(kong)(kong)硅又稱晶(jing)閘(zha)(zha)管(guan)（SiliconControlledRectifier,SCR）。自從20世紀50年代問世以(yi)來已經發展成(cheng)了一(yi)個大(da)(da)的(de)(de)(de)家(jia)族，它的(de)(de)(de)主要成(cheng)員(yuan)有單向晶(jing)閘(zha)(zha)管(guan)、雙向晶(jing)閘(zha)(zha)管(guan)、光(guang)控(kong)(kong)(kong)(kong)晶(jing)閘(zha)(zha)管(guan)、逆導(dao)晶(jing)閘(zha)(zha)管(guan)、可(ke)(ke)關斷晶(jing)可(ke)(ke)控(kong)(kong)(kong)(kong)硅閘(zha)(zha)管(guan)、快速(su)晶(jing)閘(zha)(zha)管(guan)，等(deng)(deng)等(deng)(deng)。可(ke)(ke)控(kong)(kong)(kong)(kong)硅，是可(ke)(ke)控(kong)(kong)(kong)(kong)硅整流元件的(de)(de)(de)簡稱，是一(yi)種具有三個PN結(jie)的(de)(de)(de)四層(ceng)結(jie)構的(de)(de)(de)大(da)(da)功率半導(dao)體(ti)(ti)器(qi)件，亦(yi)稱為晶(jing)閘(zha)(zha)管(guan)。具有體(ti)(ti)積(ji)小、結(jie)構相(xiang)對簡單、功能強(qiang)等(deng)(deng)特點，是比較常用的(de)(de)(de)半導(dao)體(ti)(ti)器(qi)件之(zhi)一(yi)。該器(qi)件被廣(guang)泛應(ying)用于各種電(dian)(dian)子設(she)備和電(dian)(dian)子產品中(zhong)，多用來作可(ke)(ke)控(kong)(kong)(kong)(kong)整流、逆變(bian)、變(bian)頻、調壓、無觸點開關等(deng)(deng)。家(jia)用電(dian)(dian)器(qi)中(zhong)的(de)(de)(de)調光(guang)燈(deng)、調速(su)風扇、空調機、電(dian)(dian)視機、電(dian)(dian)冰箱、洗衣機、照相(xiang)機、組合音響(xiang)、聲光(guang)電(dian)(dian)路、定時控(kong)(kong)(kong)(kong)制器(qi)、玩(wan)具裝(zhuang)置(zhi)、無線電(dian)(dian)遙控(kong)(kong)(kong)(kong)、攝像機及工業(ye)控(kong)(kong)(kong)(kong)制等(deng)(deng)都大(da)(da)量(liang)使用了可(ke)(ke)控(kong)(kong)(kong)(kong)硅器(qi)件。

當(dang)選擇替代晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)，無論什么參(can)數，不(bu)要(yao)(yao)有(you)太多(duo)的(de)(de)左邊距，它應(ying)該是(shi)(shi)(shi)盡可能接(jie)近的(de)(de)取代晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)參(can)數，由(you)于過度保證金不(bu)造成(cheng)浪費(fei)，而(er)且有(you)時副作(zuo)用，即沒(mei)有(you)觸發，或不(bu)敏(min)感等(deng)。另外(wai)，還要(yao)(yao)留(liu)意兩個晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)外(wai)形要(yao)(yao)相同(tong)，否則(ze)會(hui)給企業安裝(zhuang)管(guan)(guan)(guan)理(li)(li)工作(zuo)發展(zhan)帶來一(yi)些不(bu)利。晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)工作(zuo)原理(li)(li)的(de)(de)陽(yang)極(ji)(ji)(ji)(ji)(ji)A和(he)陰(yin)極(ji)(ji)(ji)(ji)(ji)K，其陽(yang)極(ji)(ji)(ji)(ji)(ji)A和(he)陰(yin)極(ji)(ji)(ji)(ji)(ji)K與電(dian)(dian)(dian)源和(he)負載連(lian)(lian)接(jie)，形成(cheng)晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)主(zhu)電(dian)(dian)(dian)路，晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)柵極(ji)(ji)(ji)(ji)(ji)G和(he)陰(yin)極(ji)(ji)(ji)(ji)(ji)與控制(zhi)晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)裝(zhuang)置連(lian)(lian)接(jie)，形成(cheng)晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)控制(zhi)電(dian)(dian)(dian)路。晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)工作(zuo)條件：1.當(dang)晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)承受反(fan)向(xiang)陽(yang)極(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)壓(ya)時，無論門極(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)壓(ya)是(shi)(shi)(shi)多(duo)少，晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)都(dou)會(hui)被關閉。2.當(dang)所述晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)陽(yang)極(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)壓(ya)是(shi)(shi)(shi)正向(xiang)，在晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)的(de)(de)柵極(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)壓(ya)是(shi)(shi)(shi)正向(xiang)傳導(dao)只(zhi)的(de)(de)情(qing)況(kuang)(kuang)。3.晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)在導(dao)通情(qing)況(kuang)(kuang)下，只(zhi)要(yao)(yao)有(you)一(yi)定的(de)(de)正向(xiang)影響陽(yang)極(ji)(ji)(ji)(ji)(ji)工作(zuo)電(dian)(dian)(dian)壓(ya)，不(bu)論門極(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)壓(ya)以及如何(he)，晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)同(tong)時保持導(dao)通，即晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)導(dao)通后，門極(ji)(ji)(ji)(ji)(ji)失去重(zhong)要(yao)(yao)作(zuo)用。4.在晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)被導(dao)通，當(dang)所述主(zhu)回路電(dian)(dian)(dian)壓(ya)（或電(dian)(dian)(dian)流）被減小到接(jie)近零，晶(jing)(jing)(jing)(jing)閘(zha)(zha)管(guan)(guan)(guan)關斷。不(bu)管(guan)(guan)(guan)可控硅(gui)(gui)的(de)(de)外(wai)形如何(he)，它們的(de)(de)管(guan)(guan)(guan)芯都(dou)是(shi)(shi)(shi)由(you)P型硅(gui)(gui)和(he)N型硅(gui)(gui)組成(cheng)的(de)(de)四層P1N1P2N2結構。

Ia與(yu)Il成(cheng)(cheng)正比，即當光(guang)(guang)(guang)(guang)電(dian)(dian)二(er)極(ji)管(guan)(guan)的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)電(dian)(dian)流(liu)(liu)增大(da)時(shi)，光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)的(de)(de)(de)(de)(de)輸出電(dian)(dian)流(liu)(liu)也(ye)相(xiang)(xiang)應(ying)增大(da)，同(tong)時(shi)Il的(de)(de)(de)(de)(de)增大(da)，使(shi)(shi)BGl、BG2的(de)(de)(de)(de)(de)電(dian)(dian)流(liu)(liu)放大(da)系(xi)數(shu)a1、a2也(ye)增大(da)。當al與(yu)a2之和(he)接近l時(shi)，光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)的(de)(de)(de)(de)(de)Ia達到**大(da)，即完(wan)全導(dao)(dao)通(tong)(tong)。能(neng)(neng)使(shi)(shi)光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)導(dao)(dao)通(tong)(tong)的(de)(de)(de)(de)(de)**小光(guang)(guang)(guang)(guang)照(zhao)(zhao)度，稱(cheng)其為導(dao)(dao)通(tong)(tong)光(guang)(guang)(guang)(guang)照(zhao)(zhao)度。光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)與(yu)普通(tong)(tong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)一樣(yang)，一經觸發，即成(cheng)(cheng)通(tong)(tong)導(dao)(dao)狀態。只(zhi)要(yao)有足夠(gou)強度的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)源照(zhao)(zhao)射(she)一下(xia)管(guan)(guan)子的(de)(de)(de)(de)(de)受光(guang)(guang)(guang)(guang)窗(chuang)口，它就立即成(cheng)(cheng)為通(tong)(tong)導(dao)(dao)狀態，而后即使(shi)(shi)撤離光(guang)(guang)(guang)(guang)源也(ye)能(neng)(neng)維(wei)持導(dao)(dao)通(tong)(tong)，除非加(jia)在(zai)陽(yang)極(ji)和(he)陰極(ji)之間的(de)(de)(de)(de)(de)電(dian)(dian)壓(ya)(ya)為零或反相(xiang)(xiang)，才能(neng)(neng)關閉。3．光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)的(de)(de)(de)(de)(de)特(te)性(xing)為了(le)(le)使(shi)(shi)光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)能(neng)(neng)在(zai)微弱的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)照(zhao)(zhao)下(xia)觸發導(dao)(dao)通(tong)(tong)，因此必須(xu)使(shi)(shi)光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)在(zai)極(ji)小的(de)(de)(de)(de)(de)控(kong)(kong)制電(dian)(dian)流(liu)(liu)下(xia)能(neng)(neng)可(ke)靠地(di)導(dao)(dao)通(tong)(tong)。這(zhe)樣(yang)光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)受到了(le)(le)高(gao)溫和(he)耐壓(ya)(ya)的(de)(de)(de)(de)(de)限(xian)制，在(zai)目前的(de)(de)(de)(de)(de)條件下(xia)，不(bu)可(ke)能(neng)(neng)與(yu)普通(tong)(tong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)一樣(yang)做成(cheng)(cheng)大(da)功率的(de)(de)(de)(de)(de)。光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)除了(le)(le)觸發信號(hao)不(bu)同(tong)以外，其它特(te)性(xing)基本與(yu)普通(tong)(tong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)是相(xiang)(xiang)同(tong)的(de)(de)(de)(de)(de)，因此在(zai)使(shi)(shi)用(yong)時(shi)可(ke)按照(zhao)(zhao)普通(tong)(tong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)選擇(ze)(ze)，只(zhi)要(yao)注意(yi)(yi)它是光(guang)(guang)(guang)(guang)控(kong)(kong)這(zhe)個特(te)點就行了(le)(le)。光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)對光(guang)(guang)(guang)(guang)源的(de)(de)(de)(de)(de)波長有一定的(de)(de)(de)(de)(de)要(yao)求(qiu)，即有選擇(ze)(ze)性(xing)。波長在(zai)——，都是光(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)閘(zha)(zha)(zha)管(guan)(guan)較為理想的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)源。使(shi)(shi)用(yong)注意(yi)(yi)事項/晶(jing)閘(zha)(zha)(zha)管(guan)(guan)編輯選用(yong)可(ke)控(kong)(kong)硅(gui)(gui)的(de)(de)(de)(de)(de)額定電(dian)(dian)壓(ya)(ya)時(shi)，應(ying)參考實(shi)際(ji)工作條件下(xia)的(de)(de)(de)(de)(de)峰(feng)值電(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)大(da)小，并(bing)留(liu)出一定的(de)(de)(de)(de)(de)余量。1、選用(yong)可(ke)控(kong)(kong)硅(gui)(gui)的(de)(de)(de)(de)(de)額定電(dian)(dian)流(liu)(liu)時(shi)。晶(jing)閘(zha)(zha)(zha)管(guan)(guan)的(de)(de)(de)(de)(de)主要(yao)參數(shu)有反向(xiang)(xiang)最大(da)電(dian)(dian)壓(ya)(ya)，是指門極(ji)開(kai)路時(shi)，允許加(jia)在(zai)陽(yang)極(ji)、陰極(ji)之間的(de)(de)(de)(de)(de)比較大(da)反向(xiang)(xiang)電(dian)(dian)壓(ya)(ya)。浙江分立半(ban)導(dao)(dao)體模塊可(ke)控(kong)(kong)硅(gui)(gui)（晶(jing)閘(zha)(zha)(zha)管(guan)(guan)）FUJI全新原裝原裝

上(shang)海寅涵(han)供應現貨門極關(guan)斷可控硅(GTO)；福建ABB可控硅（晶(jing)閘(zha)管）Infineon全新原(yuan)裝

晶(jing)(jing)閘(zha)(zha)管(guan)(guan)模塊(kuai)基本的(de)(de)(de)用途是可(ke)控(kong)整流(liu)(liu)。二(er)極管(guan)(guan)整流(liu)(liu)電(dian)(dian)(dian)路(lu)中(zhong)用晶(jing)(jing)閘(zha)(zha)管(guan)(guan)代(dai)替二(er)極管(guan)(guan)，就可(ke)以形(xing)成可(ke)控(kong)整流(liu)(liu)電(dian)(dian)(dian)路(lu)。在(zai)正弦(xian)交流(liu)(liu)電(dian)(dian)(dian)壓U2的(de)(de)(de)正半周(zhou)內，如果vs的(de)(de)(de)控(kong)制(zhi)極不(bu)輸入觸(chu)發(fa)脈(mo)沖(chong)(chong)(chong)UG，vs仍不(bu)能(neng)接(jie)通(tong)(tong)。只有(you)(you)當U2處于正半周(zhou)時(shi)(shi)(shi)，當觸(chu)發(fa)脈(mo)沖(chong)(chong)(chong)UG施加到控(kong)制(zhi)極時(shi)(shi)(shi)，晶(jing)(jing)閘(zha)(zha)管(guan)(guan)才接(jie)通(tong)(tong)。現在(zai)，繪制(zhi)其波形(xing)(圖4(c)和(he)(d))，可(ke)以看到只有(you)(you)當觸(chu)發(fa)脈(mo)沖(chong)(chong)(chong)UG到達時(shi)(shi)(shi)，負載RL具有(you)(you)電(dian)(dian)(dian)壓UL輸出(chu)(chu)(波形(xing)上的(de)(de)(de)陰(yin)影)。當UG到達較(jiao)早時(shi)(shi)(shi)，晶(jing)(jing)閘(zha)(zha)管(guan)(guan)導通(tong)(tong)時(shi)(shi)(shi)間較(jiao)早；UG到達較(jiao)晚時(shi)(shi)(shi)，晶(jing)(jing)閘(zha)(zha)管(guan)(guan)導通(tong)(tong)時(shi)(shi)(shi)間較(jiao)晚。通(tong)(tong)過(guo)改變觸(chu)發(fa)脈(mo)沖(chong)(chong)(chong)Ug在(zai)控(kong)制(zhi)極上的(de)(de)(de)到達時(shi)(shi)(shi)間，可(ke)以調節負載上輸出(chu)(chu)電(dian)(dian)(dian)壓的(de)(de)(de)平均UL(陰(yin)影部分的(de)(de)(de)面(mian)積)。在(zai)電(dian)(dian)(dian)工技術中(zhong)，交流(liu)(liu)電(dian)(dian)(dian)的(de)(de)(de)半周(zhou)常被(bei)設定為180度(du)，稱(cheng)為電(dian)(dian)(dian)角(jiao)。因此，在(zai)U2的(de)(de)(de)每一個(ge)正半周(zhou)期(qi)中(zhong)，從零(ling)值到觸(chu)發(fa)脈(mo)沖(chong)(chong)(chong)到達時(shi)(shi)(shi)刻的(de)(de)(de)電(dian)(dian)(dian)角(jiao)稱(cheng)為控(kong)制(zhi)角(jiao)α，每個(ge)正半周(zhou)期(qi)中(zhong)晶(jing)(jing)閘(zha)(zha)管(guan)(guan)導電(dian)(dian)(dian)的(de)(de)(de)電(dian)(dian)(dian)角(jiao)稱(cheng)為導通(tong)(tong)角(jiao)θ。顯然，α和(he)θ都用來表(biao)示晶(jing)(jing)閘(zha)(zha)管(guan)(guan)在(zai)正向電(dian)(dian)(dian)壓半周(zhou)內的(de)(de)(de)通(tong)(tong)斷(duan)范圍(wei)。通(tong)(tong)過(guo)改變控(kong)制(zhi)角(jiao)度(du)0或導通(tong)(tong)角(jiao)theta，可(ke)通(tong)(tong)過(guo)改變負載上的(de)(de)(de)脈(mo)沖(chong)(chong)(chong)直流(liu)(liu)電(dian)(dian)(dian)壓的(de)(de)(de)平均ul來實現可(ke)控(kong)整流(liu)(liu)器(qi)。福建ABB可(ke)控(kong)硅（晶(jing)(jing)閘(zha)(zha)管(guan)(guan)）Infineon全(quan)新原(yuan)裝

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