3）從分(fen)(fen)流(liu)(liu)支路(lu)電(dian)(dian)(dian)(dian)(dian)路(lu)分(fen)(fen)析中(zhong)要明(ming)白(bai)一(yi)點：從級(ji)錄(lu)(lu)(lu)音放大(da)(da)器(qi)輸出的(de)(de)(de)信(xin)號(hao)，如果從VD1支路(lu)分(fen)(fen)流(liu)(liu)得(de)多，那么(me)流(liu)(liu)入第(di)二(er)(er)級(ji)錄(lu)(lu)(lu)音放大(da)(da)器(qi)的(de)(de)(de)錄(lu)(lu)(lu)音信(xin)號(hao)就小(xiao)(xiao)，反(fan)之(zhi)(zhi)則大(da)(da)。4）VD1存(cun)在導(dao)通與截(jie)止兩(liang)種(zhong)情況(kuang)，在VD1截(jie)止時對(dui)錄(lu)(lu)(lu)音信(xin)號(hao)無(wu)分(fen)(fen)流(liu)(liu)作(zuo)用(yong)，在導(dao)通時則對(dui)錄(lu)(lu)(lu)音信(xin)號(hao)進行(xing)(xing)分(fen)(fen)流(liu)(liu)。5）在VD1正(zheng)極(ji)(ji)上(shang)接(jie)有電(dian)(dian)(dian)(dian)(dian)阻(zu)R1，它給VD1一(yi)個控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)壓，顯然(ran)這(zhe)(zhe)個電(dian)(dian)(dian)(dian)(dian)壓控(kong)制(zhi)著(zhu)VD1導(dao)通或截(jie)止。所(suo)以，R1送來(lai)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓是分(fen)(fen)析VD1導(dao)通、截(jie)止的(de)(de)(de)關(guan)(guan)鍵所(suo)在。分(fen)(fen)析這(zhe)(zhe)個電(dian)(dian)(dian)(dian)(dian)路(lu)大(da)(da)的(de)(de)(de)困難(nan)是在VD1導(dao)通后，利用(yong)了二(er)(er)極(ji)(ji)管(guan)導(dao)通后其正(zheng)向(xiang)電(dian)(dian)(dian)(dian)(dian)阻(zu)與導(dao)通電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)之(zhi)(zhi)間的(de)(de)(de)關(guan)(guan)系特性進行(xing)(xing)電(dian)(dian)(dian)(dian)(dian)路(lu)分(fen)(fen)析，即(ji)二(er)(er)極(ji)(ji)管(guan)的(de)(de)(de)正(zheng)向(xiang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)愈(yu)(yu)大(da)(da)，其正(zheng)向(xiang)電(dian)(dian)(dian)(dian)(dian)阻(zu)愈(yu)(yu)小(xiao)(xiao)，流(liu)(liu)過VD1的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)愈(yu)(yu)大(da)(da)，其正(zheng)極(ji)(ji)與負極(ji)(ji)之(zhi)(zhi)間的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)愈(yu)(yu)小(xiao)(xiao)，反(fan)之(zhi)(zhi)則大(da)(da)。3．控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)一(yi)般分(fen)(fen)析方法說(shuo)明(ming)對(dui)于控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)分(fen)(fen)析通常要分(fen)(fen)成多種(zhong)情況(kuang)，例如將(jiang)控(kong)制(zhi)信(xin)號(hao)分(fen)(fen)成大(da)(da)、中(zhong)、小(xiao)(xiao)等幾種(zhong)情況(kuang)。就這(zhe)(zhe)一(yi)電(dian)(dian)(dian)(dian)(dian)路(lu)而言，控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)壓Ui對(dui)二(er)(er)極(ji)(ji)管(guan)VD1的(de)(de)(de)控(kong)制(zhi)要分(fen)(fen)成下列幾種(zhong)情況(kuang)。1）電(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)沒(mei)有錄(lu)(lu)(lu)音信(xin)號(hao)時，直流(liu)(liu)控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)壓Ui為(wei)0，二(er)(er)極(ji)(ji)管(guan)VD1截(jie)止，VD1對(dui)電(dian)(dian)(dian)(dian)(dian)路(lu)工作(zuo)無(wu)影響，級(ji)錄(lu)(lu)(lu)音放大(da)(da)器(qi)輸出的(de)(de)(de)信(xin)號(hao)可以全部加到第(di)二(er)(er)級(ji)錄(lu)(lu)(lu)音放大(da)(da)器(qi)中(zhong)。2）當電(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)的(de)(de)(de)錄(lu)(lu)(lu)音信(xin)號(hao)較小(xiao)(xiao)時，直流(liu)(liu)控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)壓Ui較小(xiao)(xiao)，沒(mei)有大(da)(da)于二(er)(er)極(ji)(ji)管(guan)VD1的(de)(de)(de)導(dao)通電(dian)(dian)(dian)(dian)(dian)壓，所(suo)以不足以使二(er)(er)極(ji)(ji)管(guan)VD1導(dao)通。宏微整流(liu)(liu)二(er)(er)極(ji)(ji)管(guan)MMGT100J120UZ6C推薦聯系上(shang)海寅涵智(zhi)能科(ke)技(ji)。北京(jing)整流(liu)(liu)二(er)(er)極(ji)(ji)管(guan)半導(dao)體模塊

溫(wen)敏(min)(min)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)PN結的(de)壓降(jiang)是(shi)(shi)溫(wen)度的(de)函(han)數，溫(wen)度每升(sheng)高(gao)(gao)一(yi)(yi)度，溫(wen)敏(min)(min)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)PN結正向(xiang)壓降(jiang)下降(jiang)2mV。用于(yu)測溫(wen)電(dian)(dian)(dian)路。精(jing)密(mi)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)簡稱PD，精(jing)密(mi)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)是(shi)(shi)一(yi)(yi)種具有穩(wen)定(ding)(ding)(ding)電(dian)(dian)(dian)壓和穩(wen)定(ding)(ding)(ding)電(dian)(dian)(dian)流的(de)高(gao)(gao)精(jing)度二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)。它的(de)工作溫(wen)度寬，線(xian)性(xing)好，穩(wen)定(ding)(ding)(ding)性(xing)非常(chang)高(gao)(gao)。常(chang)用于(yu)各種電(dian)(dian)(dian)子路中(zhong)的(de)恒流源或恒壓源。光(guang)(guang)敏(min)(min)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)有光(guang)(guang)照(zhao)(zhao)時，電(dian)(dian)(dian)阻(zu)小，電(dian)(dian)(dian)流大，無(wu)光(guang)(guang)照(zhao)(zhao)時，電(dian)(dian)(dian)阻(zu)大，電(dian)(dian)(dian)流小紅(hong)(hong)外(wai)發(fa)射二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)紅(hong)(hong)外(wai)發(fa)光(guang)(guang)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)是(shi)(shi)一(yi)(yi)種能(neng)發(fa)出(chu)(chu)紅(hong)(hong)外(wai)線(xian)的(de)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)，通常(chang)應用于(yu)遙控(kong)器等場合激(ji)光(guang)(guang)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)激(ji)光(guang)(guang)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)的(de)特色之(zhi)一(yi)(yi)，是(shi)(shi)能(neng)直接從電(dian)(dian)(dian)流調(diao)制其輸(shu)出(chu)(chu)光(guang)(guang)的(de)強弱。因為輸(shu)出(chu)(chu)光(guang)(guang)功率與輸(shu)入電(dian)(dian)(dian)流之(zhi)間多為線(xian)性(xing)關系，所以(yi)激(ji)光(guang)(guang)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)可以(yi)采用模擬或數字電(dian)(dian)(dian)流直接調(diao)制輸(shu)出(chu)(chu)光(guang)(guang)的(de)強弱防(fang)雷(lei)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)常(chang)常(chang)用來保(bao)護對電(dian)(dian)(dian)壓很敏(min)(min)感的(de)電(dian)(dian)(dian)信設備，防(fang)止雷(lei)擊和設備開(kai)關動作時產生的(de)瞬態浪涌(yong)電(dian)(dian)(dian)壓將它們損壞。GDT是(shi)(shi)高(gao)(gao)阻(zu)抗的(de)元(yuan)件檢(jian)(jian)波(bo)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)檢(jian)(jian)波(bo)二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)是(shi)(shi)用于(yu)把疊加在高(gao)(gao)頻載波(bo)上(shang)的(de)低(di)頻信號(hao)檢(jian)(jian)出(chu)(chu)來的(de)器件。青海西門康可控(kong)硅二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)國內經銷宏微二(er)(er)(er)(er)(er)(er)極(ji)(ji)(ji)管(guan)(guan)(guan)批發(fa)采購，推薦聯(lian)系上(shang)海寅涵智能(neng)科技。

[8]2.檢(jian)(jian)測性(xing)(xing)能(neng)好(hao)壞(huai)(huai)。用(yong)(yong)(yong)(yong)萬用(yong)(yong)(yong)(yong)表電(dian)(dian)(dian)(dian)(dian)(dian)阻擋測量紅外(wai)接(jie)收二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)正、反向電(dian)(dian)(dian)(dian)(dian)(dian)阻，根據正、反向電(dian)(dian)(dian)(dian)(dian)(dian)阻值的(de)(de)(de)大(da)(da)小，即可初步判(pan)定(ding)紅外(wai)接(jie)收二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)好(hao)壞(huai)(huai)。[8]二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)激(ji)光(guang)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)按照檢(jian)(jian)測普通二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)正、反向電(dian)(dian)(dian)(dian)(dian)(dian)阻的(de)(de)(de)方法，即可將激(ji)光(guang)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)腳排列順序確定(ding)。但檢(jian)(jian)測時要(yao)(yao)注意，由于激(ji)光(guang)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)正向壓(ya)降比普通二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)要(yao)(yao)大(da)(da)，所(suo)以(yi)檢(jian)(jian)測正向電(dian)(dian)(dian)(dian)(dian)(dian)阻時，萬用(yong)(yong)(yong)(yong)表指針公略微向右偏轉而已(yi)。[8]二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)主要(yao)(yao)應(ying)用(yong)(yong)(yong)(yong)編輯(ji)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)應(ying)用(yong)(yong)(yong)(yong)幾乎在所(suo)有的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)，都要(yao)(yao)用(yong)(yong)(yong)(yong)到(dao)半導(dao)(dao)(dao)體二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)。半導(dao)(dao)(dao)體二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)在電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)的(de)(de)(de)使(shi)用(yong)(yong)(yong)(yong)能(neng)夠起到(dao)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)路(lu)(lu)，延(yan)長電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)壽命等作用(yong)(yong)(yong)(yong)。半導(dao)(dao)(dao)體二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)發(fa)展，使(shi)得集(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)更加優化，在各(ge)個領域都起到(dao)了積極(ji)(ji)(ji)的(de)(de)(de)作用(yong)(yong)(yong)(yong)。二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)在集(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)的(de)(de)(de)作用(yong)(yong)(yong)(yong)很(hen)(hen)多，維持著集(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)正常(chang)工作。下面(mian)簡(jian)要(yao)(yao)介紹二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)在以(yi)下四種電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)的(de)(de)(de)作用(yong)(yong)(yong)(yong)。[6]（1）開(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)在數字、集(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)利用(yong)(yong)(yong)(yong)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)單向導(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)實現電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)導(dao)(dao)(dao)通或(huo)斷開(kai)(kai)，這(zhe)一(yi)技術已(yi)經(jing)得到(dao)廣(guang)應(ying)用(yong)(yong)(yong)(yong)。開(kai)(kai)關(guan)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)可以(yi)很(hen)(hen)好(hao)的(de)(de)(de)保(bao)護(hu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，防止(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)因為短路(lu)(lu)等問題而被燒(shao)壞(huai)(huai)，也(ye)可實現傳統開(kai)(kai)關(guan)的(de)(de)(de)功能(neng)。開(kai)(kai)關(guan)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)還(huan)有一(yi)個特性(xing)(xing)就是開(kai)(kai)關(guan)的(de)(de)(de)速度很(hen)(hen)快。這(zhe)是傳統開(kai)(kai)關(guan)所(suo)無(wu)法比擬的(de)(de)(de)。[6]（2）限幅電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)在電(dian)(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)，常(chang)用(yong)(yong)(yong)(yong)限幅電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)對(dui)各(ge)種信號進行處理(li)。

送到(dao)后級電(dian)(dian)(dian)路(lu)(lu)中(zhong)進一(yi)(yi)(yi)步(bu)處(chu)(chu)理。圖(tu)9-50檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)端(duan)(duan)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)波(bo)(bo)形(xing)示意圖(tu)2）檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)平均(jun)值(zhi)是直(zhi)(zhi)(zhi)流成分，它的(de)大(da)小表示了檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)平均(jun)幅(fu)值(zhi)大(da)小，檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)幅(fu)度大(da)，其(qi)平均(jun)值(zhi)大(da)，這(zhe)一(yi)(yi)(yi)直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)壓(ya)值(zhi)就大(da)，反之則小。這(zhe)一(yi)(yi)(yi)直(zhi)(zhi)(zhi)流成分在(zai)收音機電(dian)(dian)(dian)路(lu)(lu)中(zhong)用來(lai)控制(zhi)一(yi)(yi)(yi)種稱(cheng)為中(zhong)頻(pin)放(fang)(fang)大(da)器的(de)放(fang)(fang)大(da)倍數(shu)（也可以(yi)(yi)稱(cheng)為增(zeng)(zeng)益），稱(cheng)為AGC（自動(dong)增(zeng)(zeng)益控制(zhi)）電(dian)(dian)(dian)壓(ya)。AGC電(dian)(dian)(dian)壓(ya)被檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)端(duan)(duan)耦合電(dian)(dian)(dian)容(rong)隔離，不(bu)(bu)(bu)能(neng)與音頻(pin)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)一(yi)(yi)(yi)起(qi)加(jia)(jia)到(dao)后級放(fang)(fang)大(da)器電(dian)(dian)(dian)路(lu)(lu)中(zhong)，而(er)是專門加(jia)(jia)到(dao)AGC電(dian)(dian)(dian)路(lu)(lu)中(zhong)。3）檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)中(zhong)還有高頻(pin)載波(bo)(bo)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)，這(zhe)一(yi)(yi)(yi)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)無用，通(tong)(tong)過接在(zai)檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)端(duan)(duan)的(de)高頻(pin)濾(lv)波(bo)(bo)電(dian)(dian)(dian)容(rong)C1，被濾(lv)波(bo)(bo)到(dao)地端(duan)(duan)。一(yi)(yi)(yi)般檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)中(zhong)不(bu)(bu)(bu)給檢(jian)波(bo)(bo)二極管(guan)加(jia)(jia)入直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)壓(ya)，但在(zai)一(yi)(yi)(yi)些(xie)小信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)中(zhong)，由于(yu)(yu)調幅(fu)信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)幅(fu)度比較小，不(bu)(bu)(bu)足(zu)以(yi)(yi)使檢(jian)波(bo)(bo)二極管(guan)導通(tong)(tong)，所(suo)以(yi)(yi)給檢(jian)波(bo)(bo)二極管(guan)加(jia)(jia)入較小的(de)正向直(zhi)(zhi)(zhi)流偏置(zhi)電(dian)(dian)(dian)壓(ya)，如圖(tu)所(suo)示，使檢(jian)波(bo)(bo)二極管(guan)處(chu)(chu)于(yu)(yu)微(wei)導通(tong)(tong)狀態(tai)。從檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)中(zhong)可以(yi)(yi)看出(chu)，高頻(pin)濾(lv)波(bo)(bo)電(dian)(dian)(dian)容(rong)C1接在(zai)檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)端(duan)(duan)與地線之間，由于(yu)(yu)檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)端(duan)(duan)的(de)三(san)種信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)其(qi)頻(pin)率不(bu)(bu)(bu)同，加(jia)(jia)上高頻(pin)濾(lv)波(bo)(bo)電(dian)(dian)(dian)容(rong)C1的(de)容(rong)量取(qu)得很小，這(zhe)樣C1對三(san)種信(xin)(xin)(xin)號(hao)(hao)(hao)(hao)的(de)處(chu)(chu)理過程不(bu)(bu)(bu)同。1）對于(yu)(yu)直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)壓(ya)而(er)言(yan)，電(dian)(dian)(dian)容(rong)的(de)隔直(zhi)(zhi)(zhi)特性使C1開路(lu)(lu)，所(suo)以(yi)(yi)檢(jian)波(bo)(bo)電(dian)(dian)(dian)路(lu)(lu)輸(shu)(shu)出(chu)端(duan)(duan)的(de)直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)壓(ya)不(bu)(bu)(bu)能(neng)被C1旁路(lu)(lu)到(dao)地線。上海寅涵(han)智(zhi)能(neng)科技專業供(gong)應美高森美快恢復二極管(guan)，歡迎咨詢。

所(suo)(suo)謂限(xian)幅(fu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)就是(shi)(shi)限(xian)制(zhi)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)中(zhong)某一(yi)(yi)(yi)點的(de)(de)信(xin)號(hao)(hao)幅(fu)度(du)(du)(du)大(da)小，讓信(xin)號(hao)(hao)幅(fu)度(du)(du)(du)大(da)到一(yi)(yi)(yi)定(ding)程度(du)(du)(du)時(shi)，不讓信(xin)號(hao)(hao)的(de)(de)幅(fu)度(du)(du)(du)再增大(da)，當信(xin)號(hao)(hao)的(de)(de)幅(fu)度(du)(du)(du)沒有達到限(xian)制(zhi)的(de)(de)幅(fu)度(du)(du)(du)時(shi)，限(xian)幅(fu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)不工(gong)作(zuo)(zuo)(zuo)(zuo)(zuo)，具(ju)有這(zhe)(zhe)種(zhong)(zhong)功能的(de)(de)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)稱為(wei)限(xian)幅(fu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)，利(li)用(yong)二(er)極(ji)管(guan)(guan)來(lai)完成(cheng)這(zhe)(zhe)一(yi)(yi)(yi)功能的(de)(de)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)稱為(wei)二(er)極(ji)管(guan)(guan)限(xian)幅(fu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)。如圖(tu)9-44所(suo)(suo)示是(shi)(shi)二(er)極(ji)管(guan)(guan)限(xian)幅(fu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)。在(zai)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)中(zhong)，A1是(shi)(shi)集(ji)(ji)(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)（一(yi)(yi)(yi)種(zhong)(zhong)常(chang)用(yong)元(yuan)器(qi)件(jian)），VT1和(he)VT2是(shi)(shi)三(san)極(ji)管(guan)(guan)（一(yi)(yi)(yi)種(zhong)(zhong)常(chang)用(yong)元(yuan)器(qi)件(jian)），R1和(he)R2是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)，VD1～VD6是(shi)(shi)二(er)極(ji)管(guan)(guan)。圖(tu)9-44二(er)極(ji)管(guan)(guan)限(xian)幅(fu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)1．電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)分(fen)(fen)析(xi)思(si)路(lu)(lu)(lu)(lu)(lu)說(shuo)明對電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)中(zhong)VD1和(he)VD2作(zuo)(zuo)(zuo)(zuo)(zuo)用(yong)分(fen)(fen)析(xi)的(de)(de)思(si)路(lu)(lu)(lu)(lu)(lu)主要(yao)說(shuo)明下列(lie)幾點：1）從電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)中(zhong)可(ke)(ke)以看出(chu)(chu)，VD1、VD2、VD3和(he)VD4、VD5、VD6兩組二(er)極(ji)管(guan)(guan)的(de)(de)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)結構一(yi)(yi)(yi)樣，這(zhe)(zhe)兩組二(er)極(ji)管(guan)(guan)在(zai)這(zhe)(zhe)一(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)中(zhong)所(suo)(suo)起(qi)的(de)(de)作(zuo)(zuo)(zuo)(zuo)(zuo)用(yong)是(shi)(shi)相(xiang)同的(de)(de)，所(suo)(suo)以只(zhi)要(yao)分(fen)(fen)析(xi)其中(zhong)一(yi)(yi)(yi)組二(er)極(ji)管(guan)(guan)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)工(gong)作(zuo)(zuo)(zuo)(zuo)(zuo)原理即可(ke)(ke)。2）集(ji)(ji)(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)A1的(de)(de)①腳(jiao)通(tong)(tong)過電(dian)(dian)(dian)(dian)(dian)阻(zu)R1與三(san)極(ji)管(guan)(guan)VT1基極(ji)相(xiang)連，顯然(ran)R1是(shi)(shi)信(xin)號(hao)(hao)傳輸(shu)(shu)電(dian)(dian)(dian)(dian)(dian)阻(zu)，將①腳(jiao)上輸(shu)(shu)出(chu)(chu)信(xin)號(hao)(hao)通(tong)(tong)過R1加到VT1基極(ji)，由于在(zai)集(ji)(ji)(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)A1的(de)(de)①腳(jiao)與三(san)極(ji)管(guan)(guan)VT1基極(ji)之間沒有隔直(zhi)電(dian)(dian)(dian)(dian)(dian)容，根據這(zhe)(zhe)一(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)結構可(ke)(ke)以判(pan)斷(duan)：集(ji)(ji)(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)A1的(de)(de)①腳(jiao)是(shi)(shi)輸(shu)(shu)出(chu)(chu)信(xin)號(hao)(hao)引(yin)腳(jiao)，而且輸(shu)(shu)出(chu)(chu)直(zhi)流和(he)交流的(de)(de)復合信(xin)號(hao)(hao)。確定(ding)集(ji)(ji)(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)A1的(de)(de)①腳(jiao)是(shi)(shi)信(xin)號(hao)(hao)輸(shu)(shu)出(chu)(chu)引(yin)腳(jiao)的(de)(de)目的(de)(de)是(shi)(shi)為(wei)了判(pan)斷(duan)二(er)極(ji)管(guan)(guan)VD1在(zai)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)中(zhong)的(de)(de)具(ju)體作(zuo)(zuo)(zuo)(zuo)(zuo)用(yong)。3）集(ji)(ji)(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)的(de)(de)①腳(jiao)輸(shu)(shu)出(chu)(chu)的(de)(de)直(zhi)流電(dian)(dian)(dian)(dian)(dian)壓顯然(ran)不是(shi)(shi)很高。三(san)社(she)功率二(er)極(ji)管(guan)(guan)PK110FG16；青海西門(men)康可(ke)(ke)控硅(gui)二(er)極(ji)管(guan)(guan)國內經銷

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二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)普遍的(de)(de)(de)(de)(de)功能就是只允許電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)由(you)(you)(you)單一方(fang)(fang)向(xiang)(xiang)(xiang)(xiang)通(tong)過（稱(cheng)(cheng)為(wei)(wei)順向(xiang)(xiang)(xiang)(xiang)偏壓(ya)(ya)(ya)(ya)(ya)(ya)），反向(xiang)(xiang)(xiang)(xiang)時阻斷(duan)（稱(cheng)(cheng)為(wei)(wei)逆(ni)向(xiang)(xiang)(xiang)(xiang)偏壓(ya)(ya)(ya)(ya)(ya)(ya)）。因此(ci)(ci)，二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)可以想成(cheng)電(dian)(dian)(dian)子(zi)版(ban)的(de)(de)(de)(de)(de)逆(ni)止閥(fa)。然而(er)實際上(shang)二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)并(bing)不會表現出如(ru)此(ci)(ci)完美的(de)(de)(de)(de)(de)開(kai)與(yu)關的(de)(de)(de)(de)(de)方(fang)(fang)向(xiang)(xiang)(xiang)(xiang)性(xing)(xing)，而(er)是較為(wei)(wei)復雜的(de)(de)(de)(de)(de)非線性(xing)(xing)電(dian)(dian)(dian)子(zi)特征——這是由(you)(you)(you)特定類型(xing)的(de)(de)(de)(de)(de)二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)技術決定的(de)(de)(de)(de)(de)。二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)使用(yong)上(shang)除了用(yong)做開(kai)關的(de)(de)(de)(de)(de)方(fang)(fang)式之外(wai)還有很多其他的(de)(de)(de)(de)(de)功能。早期的(de)(de)(de)(de)(de)二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)包含“貓須晶體(ti)(ti)（"CatsWhisker"Crystals）”以及(ji)真空管(guan)(guan)(guan)(guan)(英國稱(cheng)(cheng)為(wei)(wei)“熱(re)游(you)離閥(fa)（ThermionicValves）”)。現今普遍的(de)(de)(de)(de)(de)二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)大(da)多是使用(yong)半導體(ti)(ti)材料如(ru)硅或(huo)鍺。1、正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)性(xing)(xing)外(wai)加正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)時，在正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)特性(xing)(xing)的(de)(de)(de)(de)(de)起(qi)始部分，正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)很小，不足以克服PN結內電(dian)(dian)(dian)場的(de)(de)(de)(de)(de)阻擋作(zuo)用(yong)，正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)幾乎為(wei)(wei)零(ling)，這一段稱(cheng)(cheng)為(wei)(wei)死區(qu)。這個不能使二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)導通(tong)的(de)(de)(de)(de)(de)正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)稱(cheng)(cheng)為(wei)(wei)死區(qu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)。當(dang)正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)大(da)于(yu)死區(qu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)以后(hou)，PN結內電(dian)(dian)(dian)場被克服，二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)導通(tong)，電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)隨電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)增(zeng)大(da)而(er)迅速上(shang)升(sheng)。在正(zheng)(zheng)常(chang)使用(yong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)范(fan)(fan)圍(wei)內，導通(tong)時二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)端電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)幾乎維持不變，這個電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)稱(cheng)(cheng)為(wei)(wei)二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)正(zheng)(zheng)向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)。2、反向(xiang)(xiang)(xiang)(xiang)性(xing)(xing)外(wai)加反向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)不超(chao)過一定范(fan)(fan)圍(wei)時，通(tong)過二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)是少(shao)數載流(liu)(liu)(liu)(liu)子(zi)漂移運動(dong)所形成(cheng)反向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)。由(you)(you)(you)于(yu)反向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)很小，二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)處于(yu)截(jie)止狀態。這個反向(xiang)(xiang)(xiang)(xiang)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)又(you)稱(cheng)(cheng)為(wei)(wei)反向(xiang)(xiang)(xiang)(xiang)飽和電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)或(huo)漏電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)。北(bei)京整流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極管(guan)(guan)(guan)(guan)半導體(ti)(ti)模塊

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