下(xia)面分(fen)別介紹利(li)用(yong)萬(wan)用(yong)表判(pan)(pan)定GTO電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)、檢(jian)查GTO的(de)(de)(de)(de)(de)觸發(fa)能(neng)力(li)和(he)(he)關斷能(neng)力(li)、估測關斷增益βoff的(de)(de)(de)(de)(de)方法。判(pan)(pan)定GTO的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)將萬(wan)用(yong)表撥至R×1檔，測量任(ren)意兩腳(jiao)間的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)阻(zu)(zu)，*當(dang)黑表筆接G極(ji)(ji)(ji)(ji)，紅表筆接K極(ji)(ji)(ji)(ji)時，電(dian)(dian)(dian)(dian)阻(zu)(zu)呈低阻(zu)(zu)值(zhi)，對其它情況電(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)均為無窮大。由(you)此可(ke)(ke)迅速判(pan)(pan)定G、K極(ji)(ji)(ji)(ji)，剩下(xia)的(de)(de)(de)(de)(de)就是(shi)(shi)(shi)A極(ji)(ji)(ji)(ji)。（此處指的(de)(de)(de)(de)(de)模擬(ni)表，電(dian)(dian)(dian)(dian)子(zi)式(shi)(shi)萬(wan)用(yong)表紅表筆與(yu)電(dian)(dian)(dian)(dian)池(chi)正極(ji)(ji)(ji)(ji)相(xiang)連，模擬(ni)表紅表筆與(yu)電(dian)(dian)(dian)(dian)池(chi)負(fu)極(ji)(ji)(ji)(ji)相(xiang)連）光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)（LightTriggeredThyristor——LTT），又(you)稱(cheng)光(guang)(guang)(guang)(guang)(guang)觸發(fa)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)。國內也稱(cheng)GK型(xing)光(guang)(guang)(guang)(guang)(guang)開關管(guan)(guan)(guan)，是(shi)(shi)(shi)一種光(guang)(guang)(guang)(guang)(guang)敏器件。1．光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)結構(gou)通常晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)有(you)(you)(you)三個電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)：控(kong)(kong)制(zhi)極(ji)(ji)(ji)(ji)G、陽極(ji)(ji)(ji)(ji)A和(he)(he)陰(yin)極(ji)(ji)(ji)(ji)K。而光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)由(you)于其控(kong)(kong)制(zhi)信號來(lai)自光(guang)(guang)(guang)(guang)(guang)的(de)(de)(de)(de)(de)照射，沒有(you)(you)(you)必要(yao)再引出(chu)控(kong)(kong)制(zhi)極(ji)(ji)(ji)(ji)，所以只有(you)(you)(you)兩個電(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)（陽極(ji)(ji)(ji)(ji)A和(he)(he)陰(yin)極(ji)(ji)(ji)(ji)K）。但(dan)它的(de)(de)(de)(de)(de)結構(gou)與(yu)普通可(ke)(ke)控(kong)(kong)硅一樣(yang)，是(shi)(shi)(shi)由(you)四層PNPN器件構(gou)成(cheng)。從外(wai)形上看，光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)亦(yi)有(you)(you)(you)受光(guang)(guang)(guang)(guang)(guang)窗口，還有(you)(you)(you)兩條管(guan)(guan)(guan)腳(jiao)和(he)(he)殼體，酷似光(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)。2．光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)工(gong)作原理當(dang)在光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)陽極(ji)(ji)(ji)(ji)加上正向電(dian)(dian)(dian)(dian)壓，陰(yin)極(ji)(ji)(ji)(ji)加上負(fu)向電(dian)(dian)(dian)(dian)壓時，控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)可(ke)(ke)以等效成(cheng)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)路。可(ke)(ke)推算(suan)出(chu)下(xia)式(shi)(shi)：Ia=Il/[1-（a1+a2）]式(shi)(shi)中，Il為光(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)流(liu)；Ia為光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)陽極(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)流(liu)，即光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)輸出(chu)電(dian)(dian)(dian)(dian)流(liu)；a1、a2分(fen)別為BGl、BG2的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)放大系數。由(you)上式(shi)(shi)可(ke)(ke)知。逆(ni)導(dao)晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)關斷時間幾微(wei)秒，工(gong)作頻率達幾十(shi)千赫，優(you)于快速晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)（FSCR）。品質意大利(li)POSEICO晶(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)模塊銷售廠家(jia)

故晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)陽極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ia≈Ic0晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)處(chu)于(yu)(yu)(yu)正(zheng)向(xiang)(xiang)(xiang)阻(zu)(zu)斷狀態。當(dang)晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)在(zai)(zai)正(zheng)向(xiang)(xiang)(xiang)陽極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)下(xia)(xia)(xia)(xia)，從(cong)門極(ji)(ji)(ji)(ji)(ji)(ji)G流(liu)(liu)(liu)(liu)(liu)(liu)入電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ig，由(you)于(yu)(yu)(yu)足夠(gou)大(da)的(de)(de)(de)(de)(de)Ig流(liu)(liu)(liu)(liu)(liu)(liu)經(jing)NPN管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)發(fa)射結(jie)，從(cong)而提高(gao)(gao)(gao)其電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)放大(da)系(xi)(xi)(xi)數a2，產(chan)生足夠(gou)大(da)的(de)(de)(de)(de)(de)極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ic2流(liu)(liu)(liu)(liu)(liu)(liu)過(guo)PNP管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)發(fa)射結(jie)，并(bing)提高(gao)(gao)(gao)了PNP管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)放大(da)系(xi)(xi)(xi)數a1，產(chan)生更大(da)的(de)(de)(de)(de)(de)極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ic1流(liu)(liu)(liu)(liu)(liu)(liu)經(jing)NPN管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)發(fa)射結(jie)。這樣強烈(lie)的(de)(de)(de)(de)(de)正(zheng)反饋過(guo)程(cheng)迅速進行。從(cong)圖3，當(dang)a1和a2隨發(fa)射極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)增加(jia)而（a1+a2）≈1時(shi)，式(shi)（1—1）中的(de)(de)(de)(de)(de)分母1-（a1+a2）≈0，因此提高(gao)(gao)(gao)了晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)陽極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ia.這時(shi)，流(liu)(liu)(liu)(liu)(liu)(liu)過(guo)晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)完全由(you)主回路的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)和回路電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)決定。晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)已處(chu)于(yu)(yu)(yu)正(zheng)向(xiang)(xiang)(xiang)導通(tong)狀態。式(shi)（1—1）中，在(zai)(zai)晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)導通(tong)后(hou)(hou)，1-（a1+a2）≈0，即使此時(shi)門極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ig=0，晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)仍(reng)能保持原來的(de)(de)(de)(de)(de)陽極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ia而繼續導通(tong)。晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)在(zai)(zai)導通(tong)后(hou)(hou)，門極(ji)(ji)(ji)(ji)(ji)(ji)已失去作(zuo)用。在(zai)(zai)晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)導通(tong)后(hou)(hou)，如果不斷的(de)(de)(de)(de)(de)減小(xiao)電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)或增大(da)回路電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)，使陽極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)Ia減小(xiao)到維持電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)IH以下(xia)(xia)(xia)(xia)時(shi)，由(you)于(yu)(yu)(yu)a1和a1迅速下(xia)(xia)(xia)(xia)降，當(dang)1-（a1+a2）≈0時(shi)，晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)恢復阻(zu)(zu)斷狀態。特性特性曲線(xian)晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)陽極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)與陽極(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)的(de)(de)(de)(de)(de)關系(xi)(xi)(xi)，稱為(wei)晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)伏安特性，如圖所示。晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)陽極(ji)(ji)(ji)(ji)(ji)(ji)與陰極(ji)(ji)(ji)(ji)(ji)(ji)間加(jia)上正(zheng)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)時(shi)，在(zai)(zai)晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)控制極(ji)(ji)(ji)(ji)(ji)(ji)開路(Ig=0)情況下(xia)(xia)(xia)(xia)，開始元件中有很小(xiao)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(稱為(wei)正(zheng)向(xiang)(xiang)(xiang)漏電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu))流(liu)(liu)(liu)(liu)(liu)(liu)過(guo)。品(pin)質意(yi)大(da)利POSEICO晶閘(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)模塊銷(xiao)售廠家由(you)于(yu)(yu)(yu)這種特殊電(dian)(dian)(dian)(dian)(dian)(dian)路結(jie)構，使之具有耐高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)、耐高(gao)(gao)(gao)溫、關斷時(shi)間短(duan)、通(tong)態電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)低等優良性能。

晶(jing)(jing)閘(zha)(zha)管(guan)(guan)模塊基本的(de)用途(tu)是可(ke)控(kong)(kong)整(zheng)流(liu)(liu)。二極管(guan)(guan)整(zheng)流(liu)(liu)電(dian)(dian)路(lu)中用晶(jing)(jing)閘(zha)(zha)管(guan)(guan)代替(ti)二極管(guan)(guan)，就可(ke)以(yi)形(xing)成可(ke)控(kong)(kong)整(zheng)流(liu)(liu)電(dian)(dian)路(lu)。在(zai)(zai)正弦交流(liu)(liu)電(dian)(dian)壓U2的(de)正半(ban)周內，如果vs的(de)控(kong)(kong)制(zhi)(zhi)極不輸入(ru)觸(chu)(chu)發(fa)脈沖(chong)UG，vs仍不能接通(tong)(tong)(tong)(tong)(tong)。只有當U2處于(yu)正半(ban)周時(shi)，當觸(chu)(chu)發(fa)脈沖(chong)UG施加到(dao)(dao)(dao)控(kong)(kong)制(zhi)(zhi)極時(shi)，晶(jing)(jing)閘(zha)(zha)管(guan)(guan)才接通(tong)(tong)(tong)(tong)(tong)。現在(zai)(zai)，繪制(zhi)(zhi)其波(bo)(bo)形(xing)(圖4(c)和(d))，可(ke)以(yi)看到(dao)(dao)(dao)只有當觸(chu)(chu)發(fa)脈沖(chong)UG到(dao)(dao)(dao)達時(shi)，負(fu)載RL具(ju)有電(dian)(dian)壓UL輸出(chu)(波(bo)(bo)形(xing)上(shang)的(de)陰影)。當UG到(dao)(dao)(dao)達較早時(shi)，晶(jing)(jing)閘(zha)(zha)管(guan)(guan)導通(tong)(tong)(tong)(tong)(tong)時(shi)間較早；UG到(dao)(dao)(dao)達較晚時(shi)，晶(jing)(jing)閘(zha)(zha)管(guan)(guan)導通(tong)(tong)(tong)(tong)(tong)時(shi)間較晚。通(tong)(tong)(tong)(tong)(tong)過改(gai)(gai)變觸(chu)(chu)發(fa)脈沖(chong)Ug在(zai)(zai)控(kong)(kong)制(zhi)(zhi)極上(shang)的(de)到(dao)(dao)(dao)達時(shi)間，可(ke)以(yi)調節負(fu)載上(shang)輸出(chu)電(dian)(dian)壓的(de)平(ping)(ping)均UL(陰影部分的(de)面積)。在(zai)(zai)電(dian)(dian)工(gong)技術中，交流(liu)(liu)電(dian)(dian)的(de)半(ban)周常被設定為(wei)(wei)180度，稱為(wei)(wei)電(dian)(dian)角(jiao)。因此，在(zai)(zai)U2的(de)每一個正半(ban)周期(qi)(qi)中，從(cong)零值(zhi)到(dao)(dao)(dao)觸(chu)(chu)發(fa)脈沖(chong)到(dao)(dao)(dao)達時(shi)刻(ke)的(de)電(dian)(dian)角(jiao)稱為(wei)(wei)控(kong)(kong)制(zhi)(zhi)角(jiao)α，每個正半(ban)周期(qi)(qi)中晶(jing)(jing)閘(zha)(zha)管(guan)(guan)導電(dian)(dian)的(de)電(dian)(dian)角(jiao)稱為(wei)(wei)導通(tong)(tong)(tong)(tong)(tong)角(jiao)θ。顯(xian)然，α和θ都用來表示晶(jing)(jing)閘(zha)(zha)管(guan)(guan)在(zai)(zai)正向電(dian)(dian)壓半(ban)周內的(de)通(tong)(tong)(tong)(tong)(tong)斷范圍。通(tong)(tong)(tong)(tong)(tong)過改(gai)(gai)變控(kong)(kong)制(zhi)(zhi)角(jiao)度0或導通(tong)(tong)(tong)(tong)(tong)角(jiao)theta，可(ke)通(tong)(tong)(tong)(tong)(tong)過改(gai)(gai)變負(fu)載上(shang)的(de)脈沖(chong)直流(liu)(liu)電(dian)(dian)壓的(de)平(ping)(ping)均ul來實現可(ke)控(kong)(kong)整(zheng)流(liu)(liu)器(qi)。

定義/晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)編輯(ji)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)導(dao)(dao)通(tong)條件(jian)(jian)為：加正向(xiang)(xiang)電(dian)(dian)(dian)壓(ya)且(qie)門極有觸(chu)發電(dian)(dian)(dian)流(liu)(liu)；其派(pai)生器(qi)件(jian)(jian)有：快速(su)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，雙(shuang)向(xiang)(xiang)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，逆導(dao)(dao)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，光(guang)控(kong)(kong)(kong)(kong)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)。它(ta)是(shi)一種(zhong)大功率開(kai)(kai)關(guan)(guan)型半(ban)導(dao)(dao)體器(qi)件(jian)(jian)，在電(dian)(dian)(dian)路中(zhong)用(yong)文字符號為“V”、“VT”表示（舊標準中(zhong)用(yong)字母“SCR”表示）。晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（Thyristor）是(shi)一種(zhong)開(kai)(kai)關(guan)(guan)元件(jian)(jian)，能在高電(dian)(dian)(dian)壓(ya)、大電(dian)(dian)(dian)流(liu)(liu)條件(jian)(jian)下(xia)工作，并(bing)且(qie)其工作過(guo)程可(ke)以控(kong)(kong)(kong)(kong)制(zhi)(zhi)、被應用(yong)于可(ke)控(kong)(kong)(kong)(kong)整(zheng)流(liu)(liu)、交流(liu)(liu)調(diao)壓(ya)、無觸(chu)點電(dian)(dian)(dian)子開(kai)(kai)關(guan)(guan)、逆變及變頻等(deng)電(dian)(dian)(dian)子電(dian)(dian)(dian)路中(zhong)，是(shi)典(dian)型的小電(dian)(dian)(dian)流(liu)(liu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)大電(dian)(dian)(dian)流(liu)(liu)的設備。1957年，美國(guo)通(tong)用(yong)電(dian)(dian)(dian)器(qi)公司開(kai)(kai)發出世界上個(ge)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)產品，并(bing)于1958年使其商業化。結構/晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)編輯(ji)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)它(ta)是(shi)由一個(ge)P-N-P-N四層(4layers)半(ban)導(dao)(dao)體構成的，中(zhong)間形(xing)成了(le)三(san)個(ge)PN結。分(fen)(fen)(fen)類/晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)編輯(ji)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)按其關(guan)(guan)斷、導(dao)(dao)通(tong)及控(kong)(kong)(kong)(kong)制(zhi)(zhi)方式(shi)可(ke)分(fen)(fen)(fen)為普通(tong)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（SCR）、雙(shuang)向(xiang)(xiang)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（TRIAC）、逆導(dao)(dao)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（RCT）、門極關(guan)(guan)斷晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（GTO）、BTG晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、溫(wen)控(kong)(kong)(kong)(kong)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（TT國(guo)外(wai)，TTS國(guo)內）和光(guang)控(kong)(kong)(kong)(kong)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（LTT）等(deng)多種(zhong)。晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)按其引腳(jiao)和極性可(ke)分(fen)(fen)(fen)為二極晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、三(san)極晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和四極晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)按其封裝(zhuang)形(xing)式(shi)可(ke)分(fen)(fen)(fen)為金屬封裝(zhuang)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、塑封晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和陶瓷封裝(zhuang)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)三(san)種(zhong)類型。其中(zhong)，金屬封裝(zhuang)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)又(you)分(fen)(fen)(fen)為螺栓形(xing)、平板形(xing)、圓殼形(xing)等(deng)多種(zhong)。其派(pai)生器(qi)件(jian)(jian)有：快速(su)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，雙(shuang)向(xiang)(xiang)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，逆導(dao)(dao)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，光(guang)控(kong)(kong)(kong)(kong)晶(jing)(jing)(jing)(jing)(jing)閘(zha)(zha)(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)。

圖簡單地給(gei)出(chu)了晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)開(kai)通(tong)(tong)(tong)(tong)和(he)(he)關斷過(guo)(guo)(guo)(guo)程(cheng)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)波(bo)形。圖中(zhong)開(kai)通(tong)(tong)(tong)(tong)過(guo)(guo)(guo)(guo)程(cheng)描述的(de)(de)(de)(de)(de)(de)是(shi)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)門極(ji)在(zai)(zai)(zai)坐標原點時(shi)(shi)(shi)(shi)(shi)刻(ke)開(kai)始(shi)受到(dao)(dao)理想階躍觸(chu)(chu)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)觸(chu)(chu)發(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)情況；而(er)關斷過(guo)(guo)(guo)(guo)程(cheng)描述的(de)(de)(de)(de)(de)(de)是(shi)對已導通(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)，在(zai)(zai)(zai)外電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路所(suo)施(shi)加的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)在(zai)(zai)(zai)某(mou)一(yi)時(shi)(shi)(shi)(shi)(shi)刻(ke)突(tu)然由(you)正(zheng)向(xiang)變為反(fan)(fan)向(xiang)的(de)(de)(de)(de)(de)(de)情況（如圖中(zhong)點劃(hua)線波(bo)形）。開(kai)通(tong)(tong)(tong)(tong)過(guo)(guo)(guo)(guo)程(cheng)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)開(kai)通(tong)(tong)(tong)(tong)過(guo)(guo)(guo)(guo)程(cheng)就是(shi)載流(liu)(liu)子不(bu)斷擴(kuo)散的(de)(de)(de)(de)(de)(de)過(guo)(guo)(guo)(guo)程(cheng)。對于(yu)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)開(kai)通(tong)(tong)(tong)(tong)過(guo)(guo)(guo)(guo)程(cheng)主要關注的(de)(de)(de)(de)(de)(de)是(shi)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)開(kai)通(tong)(tong)(tong)(tong)時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)t。由(you)于(yu)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)內部的(de)(de)(de)(de)(de)(de)正(zheng)反(fan)(fan)饋過(guo)(guo)(guo)(guo)程(cheng)以及外電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)的(de)(de)(de)(de)(de)(de)限(xian)制，晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)受到(dao)(dao)觸(chu)(chu)發(fa)(fa)(fa)后(hou)，其陽(yang)(yang)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)只能逐漸上升(sheng)。從門極(ji)觸(chu)(chu)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)上升(sheng)到(dao)(dao)額定(ding)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)10%開(kai)始(shi)，到(dao)(dao)陽(yang)(yang)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)上升(sheng)到(dao)(dao)穩態值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)10%（對于(yu)阻性負載相(xiang)當于(yu)陽(yang)(yang)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)降到(dao)(dao)額定(ding)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)90%），這段時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)稱為觸(chu)(chu)發(fa)(fa)(fa)延遲時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)t。陽(yang)(yang)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)從10%上升(sheng)到(dao)(dao)穩態值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)90%所(suo)需要的(de)(de)(de)(de)(de)(de)時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)（對于(yu)阻性負載相(xiang)當于(yu)陽(yang)(yang)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)由(you)90%降到(dao)(dao)10%）稱為上升(sheng)時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)t，開(kai)通(tong)(tong)(tong)(tong)時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)t定(ding)義為兩者之和(he)(he)，即(ji)t=t+t通(tong)(tong)(tong)(tong)常晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)開(kai)通(tong)(tong)(tong)(tong)時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)與觸(chu)(chu)發(fa)(fa)(fa)脈沖的(de)(de)(de)(de)(de)(de)上升(sheng)時(shi)(shi)(shi)(shi)(shi)間(jian)(jian)，脈沖峰值(zhi)(zhi)以及加在(zai)(zai)(zai)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)兩極(ji)之間(jian)(jian)的(de)(de)(de)(de)(de)(de)正(zheng)向(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)有關。[1]關斷過(guo)(guo)(guo)(guo)程(cheng)處于(yu)導通(tong)(tong)(tong)(tong)狀態的(de)(de)(de)(de)(de)(de)晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)當外加電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)突(tu)然由(you)正(zheng)向(xiang)變為反(fan)(fan)向(xiang)時(shi)(shi)(shi)(shi)(shi)，由(you)于(yu)外電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)的(de)(de)(de)(de)(de)(de)存(cun)在(zai)(zai)(zai)，其陽(yang)(yang)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)在(zai)(zai)(zai)衰減時(shi)(shi)(shi)(shi)(shi)存(cun)在(zai)(zai)(zai)過(guo)(guo)(guo)(guo)渡過(guo)(guo)(guo)(guo)程(cheng)。陽(yang)(yang)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)將逐步(bu)衰減到(dao)(dao)零，并在(zai)(zai)(zai)反(fan)(fan)方(fang)向(xiang)流(liu)(liu)過(guo)(guo)(guo)(guo)反(fan)(fan)向(xiang)恢復電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，經過(guo)(guo)(guo)(guo)**大值(zhi)(zhi)I后(hou)，再反(fan)(fan)方(fang)向(xiang)衰減。同時(shi)(shi)(shi)(shi)(shi)。這類應(ying)用一(yi)般多應(ying)用在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力試(shi)驗設備上，通(tong)(tong)(tong)(tong)過(guo)(guo)(guo)(guo)變壓(ya)(ya)(ya)器，調整晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)導通(tong)(tong)(tong)(tong)角(jiao)輸出(chu)一(yi)個可調的(de)(de)(de)(de)(de)(de)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。品(pin)質意(yi)大利POSEICO晶(jing)(jing)閘(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)模塊銷售廠家

普通晶閘管(guan)(guan)（SCR）靠門極正信號觸發之(zhi)后，撤掉(diao)信號亦能維持通態。品質意大(da)利POSEICO晶閘管(guan)(guan)模塊銷售廠家

具有單向(xiang)導電(dian)(dian)特性，而(er)陽極(ji)(ji)(ji)A與(yu)門極(ji)(ji)(ji)之(zhi)間(jian)有兩(liang)(liang)(liang)個(ge)(ge)反極(ji)(ji)(ji)性串聯(lian)的(de)(de)(de)(de)PN結。因此，通(tong)(tong)(tong)(tong)過(guo)用(yong)萬(wan)用(yong)表(biao)的(de)(de)(de)(de)R×100或R×1kQ檔測(ce)(ce)(ce)量(liang)普通(tong)(tong)(tong)(tong)晶(jing)閘(zha)(zha)管(guan)(guan)各(ge)引腳(jiao)之(zhi)間(jian)的(de)(de)(de)(de)電(dian)(dian)阻(zu)值(zhi)(zhi)，即能確定三個(ge)(ge)電(dian)(dian)極(ji)(ji)(ji)。具體方(fang)法是：將萬(wan)用(yong)表(biao)黑(hei)表(biao)筆(bi)任(ren)接(jie)(jie)晶(jing)閘(zha)(zha)管(guan)(guan)某一(yi)(yi)極(ji)(ji)(ji)，紅(hong)表(biao)筆(bi)依次去觸碰另外兩(liang)(liang)(liang)個(ge)(ge)電(dian)(dian)極(ji)(ji)(ji)。若測(ce)(ce)(ce)量(liang)結果有一(yi)(yi)次阻(zu)值(zhi)(zhi)為(wei)(wei)幾千(qian)歐姆(mu)(kΩ)，而(er)另一(yi)(yi)次阻(zu)值(zhi)(zhi)為(wei)(wei)幾百(bai)歐姆(mu)(Ω)，則(ze)(ze)可(ke)判(pan)定黑(hei)表(biao)筆(bi)接(jie)(jie)的(de)(de)(de)(de)是門極(ji)(ji)(ji)G。在阻(zu)值(zhi)(zhi)為(wei)(wei)幾百(bai)歐姆(mu)的(de)(de)(de)(de)測(ce)(ce)(ce)量(liang)中(zhong)，紅(hong)表(biao)筆(bi)接(jie)(jie)的(de)(de)(de)(de)是陰(yin)(yin)極(ji)(ji)(ji)K，而(er)在阻(zu)值(zhi)(zhi)為(wei)(wei)幾千(qian)歐姆(mu)的(de)(de)(de)(de)那次測(ce)(ce)(ce)量(liang)中(zhong)，紅(hong)表(biao)筆(bi)接(jie)(jie)的(de)(de)(de)(de)是陽極(ji)(ji)(ji)A，若兩(liang)(liang)(liang)次測(ce)(ce)(ce)出(chu)(chu)的(de)(de)(de)(de)阻(zu)值(zhi)(zhi)均(jun)(jun)很大(da)，則(ze)(ze)說(shuo)明黑(hei)表(biao)筆(bi)接(jie)(jie)的(de)(de)(de)(de)不(bu)是門極(ji)(ji)(ji)G，應用(yong)同樣方(fang)法改測(ce)(ce)(ce)其他電(dian)(dian)極(ji)(ji)(ji)，直(zhi)到找出(chu)(chu)三個(ge)(ge)電(dian)(dian)極(ji)(ji)(ji)為(wei)(wei)止。也(ye)可(ke)以(yi)測(ce)(ce)(ce)任(ren)兩(liang)(liang)(liang)腳(jiao)之(zhi)間(jian)的(de)(de)(de)(de)正、反向(xiang)電(dian)(dian)阻(zu)，若正、反向(xiang)電(dian)(dian)阻(zu)均(jun)(jun)接(jie)(jie)近(jin)無窮大(da)，則(ze)(ze)兩(liang)(liang)(liang)極(ji)(ji)(ji)即為(wei)(wei)陽極(ji)(ji)(ji)A和陰(yin)(yin)極(ji)(ji)(ji)K，而(er)另一(yi)(yi)腳(jiao)即為(wei)(wei)門極(ji)(ji)(ji)G。普通(tong)(tong)(tong)(tong)晶(jing)閘(zha)(zha)管(guan)(guan)也(ye)可(ke)以(yi)根據(ju)其封裝形式來判(pan)斷(duan)出(chu)(chu)各(ge)電(dian)(dian)極(ji)(ji)(ji)。螺栓(shuan)(shuan)形普通(tong)(tong)(tong)(tong)晶(jing)閘(zha)(zha)管(guan)(guan)的(de)(de)(de)(de)螺栓(shuan)(shuan)一(yi)(yi)端(duan)(duan)(duan)(duan)為(wei)(wei)陽極(ji)(ji)(ji)A，較(jiao)細的(de)(de)(de)(de)引線(xian)端(duan)(duan)(duan)(duan)為(wei)(wei)門極(ji)(ji)(ji)G，較(jiao)粗的(de)(de)(de)(de)引線(xian)端(duan)(duan)(duan)(duan)為(wei)(wei)陰(yin)(yin)極(ji)(ji)(ji)K。平(ping)板形普通(tong)(tong)(tong)(tong)晶(jing)閘(zha)(zha)管(guan)(guan)的(de)(de)(de)(de)引出(chu)(chu)線(xian)端(duan)(duan)(duan)(duan)為(wei)(wei)門極(ji)(ji)(ji)G，平(ping)面端(duan)(duan)(duan)(duan)為(wei)(wei)陽極(ji)(ji)(ji)A，另一(yi)(yi)端(duan)(duan)(duan)(duan)為(wei)(wei)陰(yin)(yin)極(ji)(ji)(ji)K。金屬殼(ke)封裝(T0—3)的(de)(de)(de)(de)普通(tong)(tong)(tong)(tong)晶(jing)閘(zha)(zha)管(guan)(guan)，其外殼(ke)為(wei)(wei)陽極(ji)(ji)(ji)A。塑封(T0—220)的(de)(de)(de)(de)普通(tong)(tong)(tong)(tong)晶(jing)閘(zha)(zha)管(guan)(guan)的(de)(de)(de)(de)中(zhong)間(jian)引腳(jiao)為(wei)(wei)陽極(ji)(ji)(ji)A，且多與(yu)自帶(dai)散熱片相連。晶(jing)閘(zha)(zha)管(guan)(guan)觸發能力檢(jian)測(ce)(ce)(ce)：對于(yu)小(xiao)功(gong)率(lv)(工作電(dian)(dian)流為(wei)(wei)5A以(yi)下)的(de)(de)(de)(de)普通(tong)(tong)(tong)(tong)晶(jing)閘(zha)(zha)管(guan)(guan)，可(ke)用(yong)萬(wan)用(yong)表(biao)R×1檔測(ce)(ce)(ce)量(liang)。品質意大(da)利POSEICO晶(jing)閘(zha)(zha)管(guan)(guan)模塊(kuai)銷售廠(chang)家

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