1)安裝(zhuang)1)按電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)元(yuan)(yuan)(yuan)件(jian)明細表配齊元(yuan)(yuan)(yuan)件(jian)，并對元(yuan)(yuan)(yuan)件(jian)進行檢(jian)測。2)在(zai)面包(bao)板上(shang)(shang)(shang)根據電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)圖(tu)合理安排元(yuan)(yuan)(yuan)件(jian)的(de)位(wei)置。3)安裝(zhuang)元(yuan)(yuan)(yuan)件(jian)，確(que)認無(wu)(wu)誤(wu)后(hou)(hou)調(diao)(diao)試(shi)(shi)(shi)。(2)調(diao)(diao)試(shi)(shi)(shi)安裝(zhuang)完畢的(de)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)經檢(jian)查確(que)認無(wu)(wu)誤(wu)后(hou)(hou)，接(jie)通電(dian)(dian)(dian)(dian)(dian)源(yuan)進行調(diao)(diao)試(shi)(shi)(shi)。先調(diao)(diao)控(kong)(kong)制電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)，然后(hou)(hou)再(zai)調(diao)(diao)試(shi)(shi)(shi)主(zhu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)。控(kong)(kong)制電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)調(diao)(diao)試(shi)(shi)(shi)步驟是：在(zai)控(kong)(kong)制電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)接(jie)上(shang)(shang)(shang)電(dian)(dian)(dian)(dian)(dian)源(yuan)后(hou)(hou)，先用示(shi)波器(qi)(qi)觀(guan)察(cha)(cha)穩壓(ya)管(guan)兩端(duan)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)波形，應(ying)為梯形波；再(zai)觀(guan)察(cha)(cha)電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)兩端(duan)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)波形，應(ying)為鋸齒(chi)(chi)波；調(diao)(diao)節(jie)電(dian)(dian)(dian)(dian)(dian)位(wei)器(qi)(qi)RP，鋸齒(chi)(chi)波的(de)頻率有(you)均勻的(de)變(bian)化(hua)(hua)。表12—2所(suo)示(shi)為觸發電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)各點的(de)波形圖(tu)。主(zhu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)調(diao)(diao)試(shi)(shi)(shi)步驟是：用調(diao)(diao)壓(ya)器(qi)(qi)給(gei)(gei)主(zhu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)加(jia)一(yi)個低電(dian)(dian)(dian)(dian)(dian)壓(ya)(40～50V)，用示(shi)波器(qi)(qi)觀(guan)察(cha)(cha)晶(jing)閘(zha)管(guan)陽(yang)、陰極之間(jian)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)波形。波形上(shang)(shang)(shang)有(you)一(yi)部分(fen)是一(yi)條平(ping)線，它是晶(jing)閘(zha)管(guan)的(de)導通部分(fen)；調(diao)(diao)節(jie)電(dian)(dian)(dian)(dian)(dian)位(wei)器(qi)(qi)RP，波形中平(ping)線的(de)長度隨(sui)之變(bian)化(hua)(hua)，表示(shi)晶(jing)閘(zha)管(guan)導通角可調(diao)(diao)，電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)工作正常。否則要檢(jian)查原(yuan)因，排除故障后(hou)(hou)，重新(xin)調(diao)(diao)試(shi)(shi)(shi)。待檢(jian)查無(wu)(wu)誤(wu)后(hou)(hou)，給(gei)(gei)主(zhu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)加(jia)工作電(dian)(dian)(dian)(dian)(dian)壓(ya)，燈泡EL發光(guang)。調(diao)(diao)節(jie)RP，當增大RP時，則EL變(bian)暗；當減小RP時，則EL變(bian)亮，說(shuo)明電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)工作正常。正高電(dian)(dian)(dian)(dian)(dian)氣具有(you)一(yi)支經驗(yan)豐(feng)富、技(ji)術力量過硬的(de)專業技(ji)術人(ren)才管(guan)理團隊。濟南MTDC250晶(jing)閘(zha)管(guan)智(zhi)能(neng)模塊(kuai)批發

逆變(bian)橋進入工(gong)作(zuo)狀態，開始起(qi)振(zhen)，若(ruo)不起(qi)振(zhen)，表(biao)現(xian)為它激信號(hao)反復(fu)作(zuo)掃(sao)頻(pin)(pin)(pin)動(dong)(dong)作(zuo)，可(ke)(ke)(ke)(ke)調節中(zhong)(zhong)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)互感器的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)位，即把中(zhong)(zhong)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)互感器20V繞(rao)組(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)輸出(chu)(chu)線對(dui)(dui)調一(yi)(yi)下(xia)。若(ruo)把中(zhong)(zhong)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)互感器20V繞(rao)組(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)輸出(chu)(chu)線對(dui)(dui)調后，仍然(ran)起(qi)動(dong)(dong)不起(qi)來。此時應確認一(yi)(yi)下(xia)槽(cao)路(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)諧振(zhen)頻(pin)(pin)(pin)率(lv)是否正確，可(ke)(ke)(ke)(ke)以(yi)用電(dian)(dian)(dian)(dian)容(rong)(rong)/電(dian)(dian)(dian)(dian)感表(biao)測量(liang)一(yi)(yi)下(xia)電(dian)(dian)(dian)(dian)熱電(dian)(dian)(dian)(dian)容(rong)(rong)器的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)量(liang)及(ji)感應器的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)感量(liang)，計算出(chu)(chu)槽(cao)路(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)諧振(zhen)頻(pin)(pin)(pin)率(lv)，當(dang)槽(cao)路(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)諧振(zhen)頻(pin)(pin)(pin)率(lv)處在(zai)比(bi)較高(gao)它激頻(pin)(pin)(pin)率(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)，起(qi)動(dong)(dong)應該是很(hen)容(rong)(rong)易(yi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)。再(zai)著(zhu)就(jiu)是檢查一(yi)(yi)下(xia)逆變(bian)晶閘管是否有損壞(huai)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)。（W3W4）逆變(bian)起(qi)振(zhen)后，可(ke)(ke)(ke)(ke)做整(zheng)定(ding)逆變(bian)引前(qian)然(ran)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)工(gong)作(zuo)，把DIP開關均打(da)在(zai)OFF位置(zhi)，用示波器觀察電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)互感器100V繞(rao)組(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)波形，調節主(zhu)控板上(shang)W4微調電(dian)(dian)(dian)(dian)位器，使逆變(bian)換相(xiang)(xiang)引前(qian)角在(zai)22°左右，此時中(zhong)(zhong)頻(pin)(pin)(pin)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)與(yu)直流(liu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)比(bi)為（若(ruo)換相(xiang)(xiang)重疊(die)角較大(da)(da)，可(ke)(ke)(ke)(ke)適當(dang)增大(da)(da)逆變(bian)換相(xiang)(xiang)引前(qian)角），此步整(zheng)定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是**小(xiao)逆變(bian)引前(qian)角，一(yi)(yi)般期望它盡可(ke)(ke)(ke)(ke)能的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)小(xiao)，當(dang)然(ran)，過(guo)小(xiao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)逆變(bian)換相(xiang)(xiang)此前(qian)角會(hui)使逆變(bian)換相(xiang)(xiang)失敗(bai)，表(biao)現(xian)為中(zhong)(zhong)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)升高(gao)時，會(hui)出(chu)(chu)現(xian)重復(fu)起(qi)動(dong)(dong)。再(zai)把DIP-2開關打(da)在(zai)ON位置(zhi)，調節主(zhu)控板上(shang)W3微調電(dian)(dian)(dian)(dian)位器，整(zheng)定(ding)比(bi)較大(da)(da)逆變(bian)換相(xiang)(xiang)引前(qian)角。根據不同的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)中(zhong)(zhong)頻(pin)(pin)(pin)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)要求，比(bi)較大(da)(da)逆變(bian)換相(xiang)(xiang)引前(qian)角亦不同，如中(zhong)(zhong)頻(pin)(pin)(pin)裝置(zhi)三相(xiang)(xiang)輸入電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為380V，額定(ding)中(zhong)(zhong)頻(pin)(pin)(pin)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為750V時。威海MTDC200晶閘管智能模塊(kuai)組(zu)(zu)(zu)件(jian)正高(gao)電(dian)(dian)(dian)(dian)氣具備雄厚的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)實(shi)力和豐富的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)實(shi)踐經驗。

[1]單(dan)(dan)結管(guan)(guan)(guan)即(ji)單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)，又稱為(wei)雙基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)二(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)，是(shi)一種具有(you)(you)一個(ge)(ge)PN結和(he)(he)兩個(ge)(ge)歐姆電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)負(fu)阻半導體(ti)(ti)器件。常見的(de)(de)(de)(de)(de)(de)有(you)(you)陶瓷封(feng)裝和(he)(he)金屬殼封(feng)裝的(de)(de)(de)(de)(de)(de)單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)。[2]單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)可分為(wei)N型(xing)基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)單(dan)(dan)結管(guan)(guan)(guan)和(he)(he)P型(xing)基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)單(dan)(dan)結管(guan)(guan)(guan)兩大(da)(da)類。單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)文字符(fu)號為(wei)“VT”，圖形(xing)符(fu)號如圖所(suo)示(shi)。[3]單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)主(zhu)要(yao)參數(shu)有(you)(you)：①分壓(ya)比η，指單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)E至基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)B1間(jian)(jian)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)（不包括PN結管(guan)(guan)(guan)壓(ya)降）在兩基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)間(jian)(jian)電(dian)(dian)(dian)壓(ya)中所(suo)占(zhan)的(de)(de)(de)(de)(de)(de)比例(li)。②峰點(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)UP，是(shi)指單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)剛開始(shi)導通(tong)(tong)時(shi)的(de)(de)(de)(de)(de)(de)發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)E與基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)B1的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)，其所(suo)對應的(de)(de)(de)(de)(de)(de)發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)電(dian)(dian)(dian)流(liu)叫做(zuo)峰點(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)IP。③谷點(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)UV，是(shi)指單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)由負(fu)阻區開始(shi)進入(ru)飽(bao)和(he)(he)區時(shi)的(de)(de)(de)(de)(de)(de)發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)E與基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)B1間(jian)(jian)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)，其所(suo)對應的(de)(de)(de)(de)(de)(de)發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)電(dian)(dian)(dian)流(liu)叫做(zuo)谷點(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)IV。[4]單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)共有(you)(you)三個(ge)(ge)管(guan)(guan)(guan)腳(jiao)，分別是(shi)：發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)E、基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)B1和(he)(he)第二(er)基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)B2。圖示(shi)為(wei)兩種典型(xing)單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)管(guan)(guan)(guan)腳(jiao)電(dian)(dian)(dian)極(ji)(ji)(ji)(ji)。[5]單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)**重要(yao)的(de)(de)(de)(de)(de)(de)特(te)性是(shi)具有(you)(you)負(fu)阻性，其基(ji)(ji)(ji)本(ben)工(gong)作原(yuan)理如圖示(shi)（以N基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)單(dan)(dan)結管(guan)(guan)(guan)為(wei)例(li)）。當發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)電(dian)(dian)(dian)壓(ya)UE大(da)(da)于峰點(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)UP時(shi)，PN結處于正向偏置，單(dan)(dan)結管(guan)(guan)(guan)導通(tong)(tong)。隨著發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)電(dian)(dian)(dian)流(liu)IE的(de)(de)(de)(de)(de)(de)增加(jia)，大(da)(da)量空(kong)穴從(cong)發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)注入(ru)硅晶(jing)(jing)體(ti)(ti)，導致發(fa)(fa)射(she)(she)(she)(she)極(ji)(ji)(ji)(ji)與基(ji)(ji)(ji)極(ji)(ji)(ji)(ji)間(jian)(jian)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)阻急(ji)劇減小，其間(jian)(jian)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)位也就減小，呈現出(chu)負(fu)阻特(te)性。[6]檢測單(dan)(dan)結晶(jing)(jing)體(ti)(ti)管(guan)(guan)(guan)時(shi)，萬用表置于“R×1k”擋。

2）要(yao)準確測量(liang)GTO的(de)(de)(de)(de)關斷(duan)增益βoff，必須(xu)有(you)**測試設備。但在業余(yu)條件下可(ke)(ke)用上述方(fang)法進(jin)行估測。由于測試條件不(bu)同(tong)，測量(liang)結果*供(gong)參(can)考，或作為相(xiang)對(dui)比較的(de)(de)(de)(de)依(yi)據(ju)。逆(ni)導(dao)(dao)晶閘(zha)管(guan)(guan)(guan)(guan)(guan)RCT(Reverse-ConductingThyristir)亦稱(cheng)反向(xiang)導(dao)(dao)通(tong)晶閘(zha)管(guan)(guan)(guan)(guan)(guan)。其(qi)特(te)點是(shi)在晶閘(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)陽極(ji)(ji)與(yu)陰(yin)(yin)極(ji)(ji)之間反向(xiang)并(bing)聯一只(zhi)二(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)(guan)，使陽極(ji)(ji)與(yu)陰(yin)(yin)極(ji)(ji)的(de)(de)(de)(de)發射結均呈短(duan)路狀態(tai)。由于這種特(te)殊電(dian)(dian)(dian)(dian)路結構，使之具有(you)耐高壓(ya)、耐高溫、關斷(duan)時間短(duan)、通(tong)態(tai)電(dian)(dian)(dian)(dian)壓(ya)低(di)等(deng)優良(liang)性能。例(li)如，逆(ni)導(dao)(dao)晶閘(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)關斷(duan)時間*幾微秒，工(gong)作頻(pin)率達幾十(shi)千(qian)赫(he)，優于快(kuai)速晶閘(zha)管(guan)(guan)(guan)(guan)(guan)（FSCR）。該器件適用于開關電(dian)(dian)(dian)(dian)源(yuan)、UPS不(bu)間斷(duan)電(dian)(dian)(dian)(dian)源(yuan)中，一只(zhi)RCT即(ji)可(ke)(ke)代替(ti)晶閘(zha)管(guan)(guan)(guan)(guan)(guan)和續流(liu)二(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)(guan)各一只(zhi)，不(bu)僅(jin)使用方(fang)便，而(er)且能簡化電(dian)(dian)(dian)(dian)路設計。逆(ni)導(dao)(dao)晶閘(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)符號、等(deng)效電(dian)(dian)(dian)(dian)路如圖1(a)、(b)所(suo)示。其(qi)伏安特(te)性見圖2。由圖顯見，逆(ni)導(dao)(dao)晶閘(zha)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)伏安特(te)性具有(you)不(bu)對(dui)稱(cheng)性，正向(xiang)特(te)性與(yu)普通(tong)晶閘(zha)管(guan)(guan)(guan)(guan)(guan)SCR相(xiang)同(tong)，而(er)反向(xiang)特(te)性與(yu)硅整流(liu)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)正向(xiang)特(te)性相(xiang)同(tong)（*坐標(biao)位置(zhi)不(bu)同(tong)）。追問：兄(xiong)弟圖呢(ni)？回答(da)：變(bian)頻(pin)器的(de)(de)(de)(de)基本工(gong)作原理(li)是(shi)，首先將三相(xiang)/單(dan)相(xiang)交流(liu)電(dian)(dian)(dian)(dian)通(tong)過(guo)整流(liu)，使之變(bian)成(cheng)直流(liu)電(dian)(dian)(dian)(dian)壓(ya)，為了保證直流(liu)電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)穩定，在正負兩端連接電(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)容；為了提(ti)高輸入測的(de)(de)(de)(de)功率因數及減少(shao)電(dian)(dian)(dian)(dian)容的(de)(de)(de)(de)紋波電(dian)(dian)(dian)(dian)流(liu)，很多變(bian)頻(pin)器都配(pei)置(zhi)直流(liu)再經過(guo)逆(ni)變(bian)模塊的(de)(de)(de)(de)作用。正高電(dian)(dian)(dian)(dian)氣尊(zun)崇團結、信譽、勤奮。

對其它情況電(dian)阻(zu)(zu)值均為(wei)無窮(qiong)(qiong)大。由此(ci)可(ke)(ke)迅(xun)速(su)判(pan)定G、K極，剩(sheng)下(xia)(xia)的(de)(de)(de)(de)就是A極。2．檢查觸發(fa)能(neng)力如圖(tu)2(a)所示(shi)，首先將(jiang)表(biao)(biao)(biao)(biao)(biao)(biao)Ⅰ的(de)(de)(de)(de)黑表(biao)(biao)(biao)(biao)(biao)(biao)筆(bi)(bi)接A極，紅表(biao)(biao)(biao)(biao)(biao)(biao)筆(bi)(bi)接K極，電(dian)阻(zu)(zu)為(wei)無窮(qiong)(qiong)大；然后用黑表(biao)(biao)(biao)(biao)(biao)(biao)筆(bi)(bi)尖也同時(shi)(shi)(shi)接觸G極，加上正(zheng)(zheng)(zheng)向(xiang)(xiang)(xiang)觸發(fa)信(xin)(xin)號，表(biao)(biao)(biao)(biao)(biao)(biao)針(zhen)(zhen)向(xiang)(xiang)(xiang)右偏(pian)轉(zhuan)到低阻(zu)(zu)值即表(biao)(biao)(biao)(biao)(biao)(biao)明GTO已經導(dao)(dao)通；脫開G極，只(zhi)要GTO維持(chi)通態，就說明被測(ce)(ce)(ce)(ce)管具有觸發(fa)能(neng)力。3．檢查關斷(duan)能(neng)力現采用雙表(biao)(biao)(biao)(biao)(biao)(biao)法檢查GTO的(de)(de)(de)(de)關斷(duan)能(neng)力，如圖(tu)2(b)所示(shi)，表(biao)(biao)(biao)(biao)(biao)(biao)Ⅰ的(de)(de)(de)(de)檔位及(ji)接法保(bao)持(chi)不(bu)(bu)變。將(jiang)表(biao)(biao)(biao)(biao)(biao)(biao)Ⅱ撥于R×10檔，紅表(biao)(biao)(biao)(biao)(biao)(biao)筆(bi)(bi)接G極，黑表(biao)(biao)(biao)(biao)(biao)(biao)筆(bi)(bi)接K極，施以(yi)負向(xiang)(xiang)(xiang)觸發(fa)信(xin)(xin)號，如果表(biao)(biao)(biao)(biao)(biao)(biao)Ⅰ的(de)(de)(de)(de)指針(zhen)(zhen)向(xiang)(xiang)(xiang)左擺到無窮(qiong)(qiong)大位置，證(zheng)明GTO具有關斷(duan)能(neng)力。4．估測(ce)(ce)(ce)(ce)關斷(duan)增(zeng)益βoff進行到第(di)3步時(shi)(shi)(shi)，先不(bu)(bu)接入表(biao)(biao)(biao)(biao)(biao)(biao)Ⅱ，記下(xia)(xia)在(zai)GTO導(dao)(dao)通時(shi)(shi)(shi)表(biao)(biao)(biao)(biao)(biao)(biao)Ⅰ的(de)(de)(de)(de)正(zheng)(zheng)(zheng)向(xiang)(xiang)(xiang)偏(pian)轉(zhuan)格(ge)數n1；再接上表(biao)(biao)(biao)(biao)(biao)(biao)Ⅱ強(qiang)迫GTO關斷(duan)，記下(xia)(xia)表(biao)(biao)(biao)(biao)(biao)(biao)Ⅱ的(de)(de)(de)(de)正(zheng)(zheng)(zheng)向(xiang)(xiang)(xiang)偏(pian)轉(zhuan)格(ge)數n2。根(gen)據(ju)讀(du)取電(dian)流(liu)(liu)法按下(xia)(xia)式估算(suan)關斷(duan)增(zeng)益：βoff=IATM/IGM≈IAT/IG＝K1n1/K2n2式中K1—表(biao)(biao)(biao)(biao)(biao)(biao)Ⅰ在(zai)R×1檔的(de)(de)(de)(de)電(dian)流(liu)(liu)比例(li)(li)系數；K2—表(biao)(biao)(biao)(biao)(biao)(biao)Ⅱ在(zai)R×10檔的(de)(de)(de)(de)電(dian)流(liu)(liu)比例(li)(li)系數。βoff≈10×n1/n2此(ci)式的(de)(de)(de)(de)優點是，不(bu)(bu)需要具體計算(suan)IAT、IG之值，只(zhi)要讀(du)出(chu)二(er)者(zhe)所對應的(de)(de)(de)(de)表(biao)(biao)(biao)(biao)(biao)(biao)針(zhen)(zhen)正(zheng)(zheng)(zheng)向(xiang)(xiang)(xiang)偏(pian)轉(zhuan)格(ge)數，即可(ke)(ke)迅(xun)速(su)估測(ce)(ce)(ce)(ce)關斷(duan)增(zeng)益值。注意(yi)事(shi)項：（1）在(zai)檢查大功率GTO器件時(shi)(shi)(shi)，建議在(zai)R×1檔外邊串聯一節′，以(yi)提高測(ce)(ce)(ce)(ce)試電(dian)壓和測(ce)(ce)(ce)(ce)試電(dian)流(liu)(liu)，使GTO可(ke)(ke)靠地導(dao)(dao)通。。正(zheng)(zheng)(zheng)高電(dian)氣熱忱(chen)歡迎新老(lao)客戶惠顧。濟(ji)南MTDC250晶閘管智(zhi)能(neng)模(mo)塊批(pi)發(fa)

我公司將以優良的(de)產品，周(zhou)到的(de)服(fu)務與尊敬(jing)的(de)用戶攜手并進！濟南MTDC250晶閘管智能模塊批發

檢測(ce)兩(liang)(liang)(liang)(liang)(liang)基(ji)(ji)(ji)極(ji)間(jian)電(dian)(dian)(dian)(dian)阻：兩(liang)(liang)(liang)(liang)(liang)表(biao)(biao)(biao)筆（不分正、負）接(jie)單結(jie)(jie)(jie)晶體(ti)管(guan)(guan)除發(fa)射極(ji)E以外的(de)(de)(de)兩(liang)(liang)(liang)(liang)(liang)個(ge)管(guan)(guan)腳，讀(du)數(shu)(shu)應(ying)為(wei)(wei)(wei)3～10kΩ。[7]檢測(ce)PN結(jie)(jie)(jie)正向電(dian)(dian)(dian)(dian)阻（N基(ji)(ji)(ji)極(ji)管(guan)(guan)為(wei)(wei)(wei)例，下同）：黑(hei)表(biao)(biao)(biao)筆接(jie)發(fa)射極(ji)E，紅(hong)表(biao)(biao)(biao)筆分別(bie)接(jie)兩(liang)(liang)(liang)(liang)(liang)個(ge)基(ji)(ji)(ji)極(ji)，讀(du)數(shu)(shu)均應(ying)為(wei)(wei)(wei)數(shu)(shu)千歐。對調(diao)兩(liang)(liang)(liang)(liang)(liang)表(biao)(biao)(biao)筆后檢測(ce)PN結(jie)(jie)(jie)反向電(dian)(dian)(dian)(dian)阻，讀(du)數(shu)(shu)均應(ying)為(wei)(wei)(wei)無窮大。如果測(ce)量結(jie)(jie)(jie)果與(yu)上(shang)述不符，說明(ming)被測(ce)單結(jie)(jie)(jie)管(guan)(guan)已(yi)損壞。[8]測(ce)量單結(jie)(jie)(jie)晶體(ti)管(guan)(guan)的(de)(de)(de)分壓比η：按圖示搭接(jie)一(yi)個(ge)測(ce)量電(dian)(dian)(dian)(dian)路，用萬用表(biao)(biao)(biao)“直流(liu)10V”擋(dang)測(ce)出(chu)C2上(shang)的(de)(de)(de)電(dian)(dian)(dian)(dian)壓UC2，再(zai)按公(gong)式η=UC2/UB計算(suan)即可。[9]單結(jie)(jie)(jie)晶體(ti)管(guan)(guan)的(de)(de)(de)基(ji)(ji)(ji)本應(ying)用是組(zu)成脈(mo)(mo)沖產生(sheng)電(dian)(dian)(dian)(dian)路，包括(kuo)振蕩(dang)器、波形發(fa)生(sheng)器等(deng)，并可使(shi)電(dian)(dian)(dian)(dian)路結(jie)(jie)(jie)構大為(wei)(wei)(wei)簡化。圖示為(wei)(wei)(wei)單結(jie)(jie)(jie)晶體(ti)管(guan)(guan)弛(chi)張振蕩(dang)器。單結(jie)(jie)(jie)管(guan)(guan)VT的(de)(de)(de)發(fa)射極(ji)輸出(chu)鋸齒(chi)波，基(ji)(ji)(ji)極(ji)輸出(chu)窄脈(mo)(mo)沖，第二基(ji)(ji)(ji)極(ji)輸出(chu)方波。RE與(yu)C組(zu)成充放電(dian)(dian)(dian)(dian)回路，改(gai)(gai)變(bian)RE或(huo)C即可改(gai)(gai)變(bian)振蕩(dang)周期。該電(dian)(dian)(dian)(dian)路振蕩(dang)周期T≈RECln[1/（1-η）]，式中(zhong)，ln為(wei)(wei)(wei)自然(ran)對數(shu)(shu)，即以e（）為(wei)(wei)(wei)底(di)的(de)(de)(de)對數(shu)(shu)。[10]單結(jie)(jie)(jie)晶體(ti)管(guan)(guan)還可以用作晶閘管(guan)(guan)觸發(fa)電(dian)(dian)(dian)(dian)路。圖示為(wei)(wei)(wei)調(diao)光臺燈(deng)電(dian)(dian)(dian)(dian)路。在交(jiao)流(liu)電(dian)(dian)(dian)(dian)的(de)(de)(de)每半(ban)周內，晶閘管(guan)(guan)VS由單結(jie)(jie)(jie)管(guan)(guan)VT輸出(chu)的(de)(de)(de)窄脈(mo)(mo)沖觸發(fa)導通(tong)，調(diao)節RP便改(gai)(gai)變(bian)了(le)VT輸出(chu)窄脈(mo)(mo)沖的(de)(de)(de)時間(jian)，即改(gai)(gai)變(bian)了(le)VS的(de)(de)(de)導通(tong)角(jiao)，從(cong)而改(gai)(gai)變(bian)了(le)流(liu)過燈(deng)泡(pao)EL的(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)，實現了(le)調(diao)光的(de)(de)(de)目的(de)(de)(de)。[11]晶體(ti)閘流(liu)管(guan)(guan)簡稱為(wei)(wei)(wei)晶閘管(guan)(guan)，也叫做可控硅。濟南MTDC250晶閘管(guan)(guan)智能模塊批發(fa)

淄博正(zheng)高電(dian)氣有(you)(you)限公(gong)(gong)司是一(yi)家(jia)有(you)(you)著雄厚實力背(bei)景、信譽可靠、勵精圖治、展(zhan)望未(wei)來(lai)(lai)(lai)、有(you)(you)夢想(xiang)有(you)(you)目標，有(you)(you)組(zu)織有(you)(you)體系的(de)(de)(de)(de)公(gong)(gong)司，堅持于帶領(ling)員(yuan)工(gong)在未(wei)來(lai)(lai)(lai)的(de)(de)(de)(de)道路上大放光明(ming)，攜手共(gong)畫藍圖，在山東省等地區的(de)(de)(de)(de)電(dian)子(zi)元(yuan)器件(jian)行業(ye)中積累了大批(pi)忠誠的(de)(de)(de)(de)客戶(hu)粉絲(si)源，也收(shou)獲了良好(hao)的(de)(de)(de)(de)用戶(hu)口碑，為公(gong)(gong)司的(de)(de)(de)(de)發展(zhan)奠定的(de)(de)(de)(de)良好(hao)的(de)(de)(de)(de)行業(ye)基礎，也希望未(wei)來(lai)(lai)(lai)公(gong)(gong)司能成(cheng)為**，努(nu)力為行業(ye)領(ling)域的(de)(de)(de)(de)發展(zhan)奉獻出自己的(de)(de)(de)(de)一(yi)份力量，我(wo)們相信精益(yi)求(qiu)精的(de)(de)(de)(de)工(gong)作(zuo)態度(du)和不(bu)斷的(de)(de)(de)(de)完善創新理(li)念以及自強(qiang)不(bu)息，斗志昂揚的(de)(de)(de)(de)的(de)(de)(de)(de)企業(ye)精神將**淄博正(zheng)高電(dian)氣供應和您一(yi)起攜手步入輝煌，共(gong)創佳績，一(yi)直以來(lai)(lai)(lai)，公(gong)(gong)司貫(guan)徹執行科學管(guan)理(li)、創新發展(zhan)、誠實守信的(de)(de)(de)(de)方(fang)針，員(yuan)工(gong)精誠努(nu)力，協同奮取，以品質(zhi)、服(fu)務來(lai)(lai)(lai)贏得市場，我(wo)們一(yi)直在路上！

本(ben)文(wen)來自(zi)宜興市恒通(tong)風機有限(xian)公司：//vijoo.com.cn/Article/69e77799153.html