二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)普遍(bian)的(de)(de)(de)(de)功能(neng)就是只允許(xu)電(dian)(dian)(dian)(dian)流(liu)由(you)單一方(fang)向(xiang)(xiang)(xiang)(xiang)通(tong)(tong)過(guo)（稱(cheng)為(wei)(wei)順向(xiang)(xiang)(xiang)(xiang)偏(pian)壓(ya)(ya)），反(fan)向(xiang)(xiang)(xiang)(xiang)時(shi)阻(zu)斷(duan)（稱(cheng)為(wei)(wei)逆(ni)向(xiang)(xiang)(xiang)(xiang)偏(pian)壓(ya)(ya)）。因此，二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)可以想(xiang)成(cheng)電(dian)(dian)(dian)(dian)子版的(de)(de)(de)(de)逆(ni)止(zhi)閥(fa)。然而實際上(shang)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)并不會表現出如(ru)此完美(mei)的(de)(de)(de)(de)開與(yu)關的(de)(de)(de)(de)方(fang)向(xiang)(xiang)(xiang)(xiang)性(xing)，而是較為(wei)(wei)復雜的(de)(de)(de)(de)非線性(xing)電(dian)(dian)(dian)(dian)子特(te)(te)征——這是由(you)特(te)(te)定(ding)類型的(de)(de)(de)(de)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)技術決定(ding)的(de)(de)(de)(de)。二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)使(shi)用上(shang)除了用做開關的(de)(de)(de)(de)方(fang)式之外(wai)還有很多(duo)其他(ta)的(de)(de)(de)(de)功能(neng)。早期的(de)(de)(de)(de)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)包含(han)“貓須晶(jing)體(ti)（"CatsWhisker"Crystals）”以及(ji)真(zhen)空(kong)管(guan)(guan)(guan)(guan)(英國(guo)稱(cheng)為(wei)(wei)“熱游(you)離閥(fa)（ThermionicValves）”)。現今普遍(bian)的(de)(de)(de)(de)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)大(da)(da)(da)多(duo)是使(shi)用半導(dao)體(ti)材(cai)料如(ru)硅或鍺。1、正(zheng)向(xiang)(xiang)(xiang)(xiang)性(xing)外(wai)加(jia)正(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)時(shi)，在正(zheng)向(xiang)(xiang)(xiang)(xiang)特(te)(te)性(xing)的(de)(de)(de)(de)起始部分，正(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)很小，不足以克服PN結(jie)內電(dian)(dian)(dian)(dian)場的(de)(de)(de)(de)阻(zu)擋作(zuo)用，正(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)流(liu)幾乎為(wei)(wei)零，這一段稱(cheng)為(wei)(wei)死(si)區。這個不能(neng)使(shi)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)導(dao)通(tong)(tong)的(de)(de)(de)(de)正(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)稱(cheng)為(wei)(wei)死(si)區電(dian)(dian)(dian)(dian)壓(ya)(ya)。當正(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)大(da)(da)(da)于死(si)區電(dian)(dian)(dian)(dian)壓(ya)(ya)以后，PN結(jie)內電(dian)(dian)(dian)(dian)場被克服，二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)正(zheng)向(xiang)(xiang)(xiang)(xiang)導(dao)通(tong)(tong)，電(dian)(dian)(dian)(dian)流(liu)隨電(dian)(dian)(dian)(dian)壓(ya)(ya)增大(da)(da)(da)而迅速(su)上(shang)升。在正(zheng)常使(shi)用的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)范(fan)圍內，導(dao)通(tong)(tong)時(shi)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)端電(dian)(dian)(dian)(dian)壓(ya)(ya)幾乎維持不變，這個電(dian)(dian)(dian)(dian)壓(ya)(ya)稱(cheng)為(wei)(wei)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)正(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)。2、反(fan)向(xiang)(xiang)(xiang)(xiang)性(xing)外(wai)加(jia)反(fan)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)不超(chao)過(guo)一定(ding)范(fan)圍時(shi)，通(tong)(tong)過(guo)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)是少數(shu)載流(liu)子漂移運動所形成(cheng)反(fan)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)流(liu)。由(you)于反(fan)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)流(liu)很小，二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)處(chu)于截止(zhi)狀(zhuang)態。這個反(fan)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)流(liu)又(you)稱(cheng)為(wei)(wei)反(fan)向(xiang)(xiang)(xiang)(xiang)飽和(he)電(dian)(dian)(dian)(dian)流(liu)或漏(lou)電(dian)(dian)(dian)(dian)流(liu)。上(shang)海寅涵智能(neng)科技是西門康(kang)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)進口廠(chang)商(shang)，種(zhong)類齊(qi)全。福建宏微二(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)型號齊(qi)全

而整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)(zhi)低的(de)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)則不能(neng)(neng)代換整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)(zhi)高的(de)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)。整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)檢查方法編(bian)輯(ji)首先將整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)器(qi)中的(de)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)全部(bu)(bu)拆下，用(yong)(yong)萬用(yong)(yong)表的(de)100×R或(huo)1000×R歐姆檔，測(ce)(ce)量整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)兩(liang)根(gen)引出(chu)線(頭、尾(wei)對調各(ge)測(ce)(ce)一次(ci))。若兩(liang)次(ci)測(ce)(ce)得的(de)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)(zhi)(zhi)相(xiang)差很大，例(li)如(ru)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)(zhi)(zhi)大的(de)高達幾百KΩ到無窮大，而電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)(zhi)(zhi)小(xiao)(xiao)的(de)幾百Ω甚至更(geng)小(xiao)(xiao)，說(shuo)明該二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)是好(hao)的(de)(發生了軟(ruan)擊穿(chuan)的(de)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)除外)。若兩(liang)次(ci)測(ce)(ce)得的(de)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)(zhi)(zhi)幾乎相(xiang)等，而且電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)(zhi)(zhi)很小(xiao)(xiao)，說(shuo)明該二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)已被擊穿(chuan)損壞，不能(neng)(neng)使用(yong)(yong)。如(ru)果(guo)兩(liang)次(ci)測(ce)(ce)量的(de)阻(zu)(zu)(zu)值(zhi)(zhi)(zhi)都是無窮大，說(shuo)明此二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)已經內(nei)部(bu)(bu)斷(duan)開(kai)，不能(neng)(neng)使用(yong)(yong)。整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)常用(yong)(yong)型號(hao)編(bian)輯(ji)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)型號(hao)，用(yong)(yong)途(tu)，高反向工(gong)作電(dian)(dian)(dian)(dian)壓VR，大平(ping)均整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)IF1N4001硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)50V,1A,(Ir=5uA,Vf=1V,Ifs=50A)1N4002硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)100V,1A,1N4003硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)200V,1A,1N4004硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)400V,1A,1N4005硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)600V,1A,1N4006硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)800V,1A,1N4007硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)1000V,1A,1N4148硅(gui)(gui)(gui)(gui)(gui)開(kai)關二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)75V,4PF,Ir=25nA,Vf=1V,1N5391硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)50V,,(Ir=10uA,Vf=)1N5392硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)100V,,1N5393硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)200V,,1N5394硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)300V,,1N5395硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)400V,,1N5396硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)500V,,1N5397硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)600V,,1N5398硅(gui)(gui)(gui)(gui)(gui)整(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)800V,。江西(xi)英飛凌可控硅(gui)(gui)(gui)(gui)(gui)二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)上海寅涵(han)智能(neng)(neng)科(ke)技經銷(xiao)各(ge)類型號(hao)艾賽斯二(er)(er)(er)(er)(er)極(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)，歡迎聯系(xi)購買。

電(dian)(dian)(dian)(dian)(dian)(dian)容C2始(shi)終接(jie)入電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)，此時振蕩頻(pin)率降低。4．同類電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)工(gong)作原理(li)分析(xi)如圖(tu)(tu)所(suo)(suo)(suo)示，電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)的(de)(de)VD1為開關二(er)(er)極管(guan)，控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)通(tong)(tong)過R1加到VD1正極，控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是(shi)(shi)一個矩(ju)形(xing)(xing)脈(mo)沖電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，波(bo)(bo)(bo)(bo)形(xing)(xing)見(jian)圖(tu)(tu)中(zhong)所(suo)(suo)(suo)示。當(dang)控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)為0V時，VD1不(bu)能導通(tong)(tong)，相(xiang)當(dang)于(yu)(yu)(yu)開路(lu)(lu)(lu)，這時對L1和(he)(he)(he)C1、L2和(he)(he)(he)C2電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)沒有影(ying)響；當(dang)控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)為高電(dian)(dian)(dian)(dian)(dian)(dian)平時，控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)使開關二(er)(er)極管(guan)VD1導通(tong)(tong)，VD1相(xiang)當(dang)于(yu)(yu)(yu)通(tong)(tong)路(lu)(lu)(lu)，電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)A點的(de)(de)交(jiao)流信號(hao)(hao)通(tong)(tong)過導通(tong)(tong)的(de)(de)VD1和(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)容C3接(jie)地(di)(di)，等于(yu)(yu)(yu)將電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)的(de)(de)A點交(jiao)流接(jie)地(di)(di)，使L2和(he)(he)(he)C2電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)不(bu)起(qi)作用(yong)。從(cong)上述分析(xi)可知，電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)的(de)(de)二(er)(er)極管(guan)VD1相(xiang)當(dang)于(yu)(yu)(yu)一只開關，控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)的(de)(de)A點交(jiao)流信號(hao)(hao)是(shi)(shi)否接(jie)地(di)(di)。二(er)(er)極管(guan)檢(jian)波(bo)(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)及故障處(chu)理(li)如圖(tu)(tu)9-48所(suo)(suo)(suo)示是(shi)(shi)二(er)(er)極管(guan)檢(jian)波(bo)(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)。電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)的(de)(de)VD1是(shi)(shi)檢(jian)波(bo)(bo)(bo)(bo)二(er)(er)極管(guan)，C1是(shi)(shi)高頻(pin)濾(lv)波(bo)(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)(dian)容，R1是(shi)(shi)檢(jian)波(bo)(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)負(fu)載(zai)電(dian)(dian)(dian)(dian)(dian)(dian)阻，C2是(shi)(shi)耦合電(dian)(dian)(dian)(dian)(dian)(dian)容。圖(tu)(tu)9-48二(er)(er)極管(guan)檢(jian)波(bo)(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)1．電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)分析(xi)準(zhun)備(bei)知識眾所(suo)(suo)(suo)周(zhou)知，收(shou)(shou)音機(ji)有調(diao)(diao)幅(fu)收(shou)(shou)音機(ji)和(he)(he)(he)調(diao)(diao)頻(pin)收(shou)(shou)音機(ji)兩種，調(diao)(diao)幅(fu)信號(hao)(hao)就(jiu)(jiu)是(shi)(shi)調(diao)(diao)幅(fu)收(shou)(shou)音機(ji)中(zhong)處(chu)理(li)和(he)(he)(he)放大(da)的(de)(de)信號(hao)(hao)。見(jian)圖(tu)(tu)中(zhong)的(de)(de)調(diao)(diao)幅(fu)信號(hao)(hao)波(bo)(bo)(bo)(bo)形(xing)(xing)示意圖(tu)(tu)，對這一信號(hao)(hao)波(bo)(bo)(bo)(bo)形(xing)(xing)主要(yao)說(shuo)明下列幾點：1）從(cong)調(diao)(diao)幅(fu)收(shou)(shou)音機(ji)天線下來(lai)的(de)(de)就(jiu)(jiu)是(shi)(shi)調(diao)(diao)幅(fu)信號(hao)(hao)。2）信號(hao)(hao)的(de)(de)中(zhong)間部(bu)分是(shi)(shi)頻(pin)率很高的(de)(de)載(zai)波(bo)(bo)(bo)(bo)信號(hao)(hao)，它(ta)的(de)(de)上下端是(shi)(shi)調(diao)(diao)幅(fu)信號(hao)(hao)的(de)(de)包(bao)(bao)絡(luo)(luo)，其包(bao)(bao)絡(luo)(luo)就(jiu)(jiu)是(shi)(shi)所(suo)(suo)(suo)需要(yao)的(de)(de)音頻(pin)信號(hao)(hao)。3）上包(bao)(bao)絡(luo)(luo)信號(hao)(hao)和(he)(he)(he)下包(bao)(bao)絡(luo)(luo)信號(hao)(hao)對稱(cheng)，但(dan)是(shi)(shi)信號(hao)(hao)相(xiang)位相(xiang)反。

ALC電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)在(zai)(zai)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)機(ji)、卡(ka)座的(de)(de)(de)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)卡(ka)中(zhong)，錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)時(shi)要對(dui)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)(de)(de)大小幅(fu)度(du)進行控(kong)制(zhi)，了解(jie)下列幾點具(ju)體(ti)(ti)的(de)(de)(de)控(kong)制(zhi)要求(qiu)有(you)助于(yu)(yu)分(fen)(fen)(fen)析(xi)(xi)二極管(guan)(guan)VD1自動控(kong)制(zhi)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)。1）在(zai)(zai)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)幅(fu)度(du)較(jiao)(jiao)小時(shi)，不(bu)(bu)控(kong)制(zhi)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)(de)(de)幅(fu)度(du)。2）當(dang)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)(de)(de)幅(fu)度(du)大到一(yi)定(ding)程度(du)后，開始對(dui)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)幅(fu)度(du)進行控(kong)制(zhi)，即(ji)對(dui)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)幅(fu)度(du)進行衰減(jian)(jian)(jian)，對(dui)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)幅(fu)度(du)控(kong)制(zhi)的(de)(de)(de)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)就是ALC電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)。3）ALC電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)進入(ru)控(kong)制(zhi)狀態(tai)后，要求(qiu)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)愈(yu)大，對(dui)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)(de)(de)衰減(jian)(jian)(jian)量(liang)愈(yu)大。通(tong)過上述說(shuo)明可知，電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)分(fen)(fen)(fen)析(xi)(xi)中(zhong)要求(qiu)自己(ji)有(you)比較(jiao)(jiao)全的(de)(de)(de)知識面，這需要在(zai)(zai)不(bu)(bu)斷的(de)(de)(de)學習中(zhong)日積月累。2．電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)工作(zuo)(zuo)原(yuan)(yuan)理(li)分(fen)(fen)(fen)析(xi)(xi)思(si)路(lu)(lu)(lu)(lu)說(shuo)明關(guan)于(yu)(yu)這一(yi)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)工作(zuo)(zuo)原(yuan)(yuan)理(li)的(de)(de)(de)分(fen)(fen)(fen)析(xi)(xi)思(si)路(lu)(lu)(lu)(lu)主要說(shuo)明下列幾點：1）如果沒有(you)VD1這一(yi)支(zhi)路(lu)(lu)(lu)(lu)，從(cong)級(ji)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)放大器輸(shu)出(chu)的(de)(de)(de)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)全部(bu)加到第二級(ji)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)放大器中(zhong)。但是，有(you)了VD1這一(yi)支(zhi)路(lu)(lu)(lu)(lu)之后，從(cong)級(ji)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)放大器輸(shu)出(chu)的(de)(de)(de)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)有(you)可能會經過C1和導通(tong)的(de)(de)(de)VD1流(liu)(liu)到地端，形成對(dui)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)(de)(de)分(fen)(fen)(fen)流(liu)(liu)衰減(jian)(jian)(jian)。2）電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)分(fen)(fen)(fen)析(xi)(xi)的(de)(de)(de)第二個關(guan)鍵是VD1這一(yi)支(zhi)路(lu)(lu)(lu)(lu)對(dui)級(ji)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)放大器輸(shu)出(chu)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)(de)(de)對(dui)地分(fen)(fen)(fen)流(liu)(liu)衰減(jian)(jian)(jian)的(de)(de)(de)具(ju)體(ti)(ti)情(qing)況(kuang)。顯然，支(zhi)路(lu)(lu)(lu)(lu)中(zhong)的(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)C1是一(yi)只(zhi)容(rong)(rong)(rong)量(liang)較(jiao)(jiao)大的(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)（C1電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)符(fu)號(hao)(hao)(hao)(hao)中(zhong)標出(chu)極性，說(shuo)明C1是電(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)，而電(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)容(rong)(rong)(rong)量(liang)較(jiao)(jiao)大），所(suo)以(yi)C1對(dui)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)呈通(tong)路(lu)(lu)(lu)(lu)，說(shuo)明這一(yi)支(zhi)路(lu)(lu)(lu)(lu)中(zhong)VD1是對(dui)錄(lu)(lu)(lu)(lu)(lu)音(yin)(yin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)進行分(fen)(fen)(fen)流(liu)(liu)衰減(jian)(jian)(jian)的(de)(de)(de)關(guan)鍵元(yuan)器件。上海寅(yin)涵智(zhi)能科技(ji)經銷(xiao)各(ge)類型號(hao)(hao)(hao)(hao)西門(men)康二極管(guan)(guan)SKKT162-16E歡迎聯系購買。

二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)正(zheng)向(xiang)(xiang)(xiang)壓(ya)降硅管(guan)約(yue)為(wei)(wei)(通常(chang)取)，鍺管(guan)約(yue)為(wei)(wei)(通常(chang)取)。·折疊反(fan)(fan)向(xiang)(xiang)(xiang)特性(xing)(xing)(外加(jia)反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)壓(ya))反(fan)(fan)向(xiang)(xiang)(xiang)特性(xing)(xing)即二(er)(er)極(ji)(ji)(ji)管(guan)反(fan)(fan)向(xiang)(xiang)(xiang)偏置時的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)與電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)關系(xi)(xi)。反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)壓(ya)加(jia)強了內電(dian)(dian)(dian)(dian)(dian)場對(dui)多子擴(kuo)散的(de)(de)(de)阻礙(ai)，多子幾乎不能(neng)形(xing)(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)流(liu)，但是(shi)少子在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)作用(yong)(yong)(yong)(yong)下(xia)漂移，形(xing)(xing)成(cheng)很小(xiao)(xiao)(xiao)的(de)(de)(de)漂移電(dian)(dian)(dian)(dian)(dian)流(liu)，且與反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)大(da)小(xiao)(xiao)(xiao)基本無關。此(ci)時的(de)(de)(de)反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)流(liu)稱(cheng)為(wei)(wei)反(fan)(fan)向(xiang)(xiang)(xiang)飽和電(dian)(dian)(dian)(dian)(dian)流(liu)盡，二(er)(er)極(ji)(ji)(ji)管(guan)呈現很高的(de)(de)(de)反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)阻，處于截止狀(zhuang)態。折疊反(fan)(fan)向(xiang)(xiang)(xiang)擊(ji)(ji)穿(chuan)特性(xing)(xing)反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)壓(ya)增(zeng)(zeng)加(jia)到一(yi)(yi)定數值時，反(fan)(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)流(liu)急劇增(zeng)(zeng)大(da)，這(zhe)種現象稱(cheng)為(wei)(wei)二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)反(fan)(fan)向(xiang)(xiang)(xiang)擊(ji)(ji)穿(chuan)。此(ci)時對(dui)應的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)稱(cheng)為(wei)(wei)反(fan)(fan)向(xiang)(xiang)(xiang)擊(ji)(ji)穿(chuan)電(dian)(dian)(dian)(dian)(dian)壓(ya)，用(yong)(yong)(yong)(yong)%R表示(shi)。實(shi)際(ji)應用(yong)(yong)(yong)(yong)中，應該(gai)對(dui)反(fan)(fan)向(xiang)(xiang)(xiang)擊(ji)(ji)穿(chuan)后的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)加(jia)以限制(zhi)，以免(mian)損壞(huai)二(er)(er)極(ji)(ji)(ji)管(guan)。a、目視法判斷半導體(ti)(ti)二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)極(ji)(ji)(ji)性(xing)(xing):一(yi)(yi)般在(zai)(zai)實(shi)物(wu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)路圖(tu)中可以通過眼(yan)睛直接(jie)看出半導體(ti)(ti)二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)正(zheng)負極(ji)(ji)(ji)。在(zai)(zai)實(shi)物(wu)中如果看到一(yi)(yi)端有(you)顏(yan)色標示(shi)的(de)(de)(de)是(shi)負極(ji)(ji)(ji)，另(ling)外一(yi)(yi)端是(shi)正(zheng)極(ji)(ji)(ji)。b、用(yong)(yong)(yong)(yong)萬用(yong)(yong)(yong)(yong)表判斷半導體(ti)(ti)二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)極(ji)(ji)(ji)性(xing)(xing):通常(chang)選用(yong)(yong)(yong)(yong)萬用(yong)(yong)(yong)(yong)表的(de)(de)(de)歐姆檔(R*100或R*1K)，然后分(fen)(fen)別用(yong)(yong)(yong)(yong)萬用(yong)(yong)(yong)(yong)表的(de)(de)(de)兩表筆分(fen)(fen)別出接(jie)到二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)兩個極(ji)(ji)(ji)上(shang)出，當二(er)(er)極(ji)(ji)(ji)管(guan)導通，測的(de)(de)(de)阻值較小(xiao)(xiao)(xiao)(一(yi)(yi)般幾十歐姆至(zhi)(zhi)幾千歐姆之間(jian))，這(zhe)時黑表筆接(jie)的(de)(de)(de)是(shi)二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)正(zheng)極(ji)(ji)(ji)，紅表筆接(jie)的(de)(de)(de)是(shi)二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)負極(ji)(ji)(ji)。當測的(de)(de)(de)阻值很大(da)(一(yi)(yi)般為(wei)(wei)幾百至(zhi)(zhi)幾千歐姆)，這(zhe)時黑表筆接(jie)的(de)(de)(de)是(shi)二(er)(er)極(ji)(ji)(ji)管(guan)的(de)(de)(de)負極(ji)(ji)(ji)。上(shang)海寅(yin)涵智能(neng)科(ke)技經銷各類IXYS艾賽斯(si)二(er)(er)極(ji)(ji)(ji)管(guan)VUO82-16NO7歡迎聯系(xi)(xi)購買(mai)。廣西西門(men)康二(er)(er)極(ji)(ji)(ji)管(guan)快速(su)發貨

IXYS艾賽斯(si)二(er)極管(guan)VUI72-16NOXT國內經銷(xiao)商找哪家(jia)，推(tui)薦咨詢上海寅涵智能科技。福建(jian)宏微二(er)極管(guan)型號齊全

二極管正負極判斷方法如下：

1、對于(yu)普通二極管，可以看管體表面，有白線的(de)一端為負極。

2、對于發光二(er)極(ji)管，引腳長的為正極(ji)，短(duan)的為負極(ji)。

3、如果(guo)引腳被(bei)剪得一(yi)樣長了，發光二(er)極管管體內部(bu)金(jin)屬極較(jiao)小的是(shi)正(zheng)極，大的片(pian)狀的是(shi)負極。

4、如果看(kan)不清(qing)，也可打開萬用(yong)表(biao)，將旋鈕撥(bo)到(dao)通斷檔，將紅黑(hei)表(biao)筆分別接在(zai)兩個引腳。若有讀數(shu)，則紅表(biao)筆一(yi)端為正(zheng)極(ji)(ji)，若讀數(shu)為1，則黑(hei)表(biao)筆一(yi)端為正(zheng)極(ji)(ji)。二(er)極(ji)(ji)管是用(yong)半(ban)導(dao)(dao)體(ti)材料（硅(gui)、硒、鍺等）制成的一(yi)種電(dian)(dian)子器(qi)件，它具有單向(xiang)(xiang)導(dao)(dao)電(dian)(dian)性能，即給二(er)極(ji)(ji)管陽極(ji)(ji)加上正(zheng)向(xiang)(xiang)電(dian)(dian)壓時(shi)(shi)，二(er)極(ji)(ji)管導(dao)(dao)通。當給陽極(ji)(ji)和陰極(ji)(ji)加上反(fan)向(xiang)(xiang)電(dian)(dian)壓時(shi)(shi)，二(er)極(ji)(ji)管截止。

因此，二極管的導通(tong)和(he)截(jie)止，則相(xiang)當于開關的接通(tong)與斷開。二極管結(jie)構構成(cheng)二極管就是由一個PN結(jie)加上相(xiang)應(ying)的電極引線及管殼封裝而(er)成(cheng)的，采(cai)用(yong)(yong)不同的摻(chan)雜(za)工(gong)藝。通(tong)過擴(kuo)散作用(yong)(yong)，將(jiang)P型半(ban)導體(ti)(ti)與N型半(ban)導體(ti)(ti)制作在(zai)(zai)同一塊半(ban)導體(ti)(ti)（通(tong)常是硅或鍺）基片上，在(zai)(zai)它們的交界面就形成(cheng)空(kong)間電荷區稱為PN結(jie)。福建宏(hong)微(wei)二極管型號齊全(quan)

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