电(dian)(dian)(dian)路(lu)(lu)工作原理(li)分析思路(lu)(lu)说(shuo)明关(guan)(guan)于这一(yi)电(dian)(dian)(dian)路(lu)(lu)工作原理(li)的(de)(de)(de)(de)(de)(de)(de)分析思路(lu)(lu)主(zhu)要说(shuo)明下(xia)列几(ji)点：（1）如果没有(you)VD1这一(yi)支(zhi)路(lu)(lu)，从级(ji)录(lu)(lu)音(yin)放(fang)大(da)(da)(da)器输出(chu)(chu)的(de)(de)(de)(de)(de)(de)(de)录(lu)(lu)音(yin)信(xin)(xin)号全部加(jia)到第二(er)级(ji)录(lu)(lu)音(yin)放(fang)大(da)(da)(da)器中(zhong)。但是(shi)，有(you)了VD1这一(yi)支(zhi)路(lu)(lu)之后(hou)，从级(ji)录(lu)(lu)音(yin)放(fang)大(da)(da)(da)器输出(chu)(chu)的(de)(de)(de)(de)(de)(de)(de)录(lu)(lu)音(yin)信(xin)(xin)号有(you)可能会经过(guo)C1和导通(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)VD1流到地(di)端(duan)，形成对(dui)(dui)录(lu)(lu)音(yin)信(xin)(xin)号的(de)(de)(de)(de)(de)(de)(de)分流衰减。（2）电(dian)(dian)(dian)路(lu)(lu)分析的(de)(de)(de)(de)(de)(de)(de)第二(er)个关(guan)(guan)键是(shi)VD1这一(yi)支(zhi)路(lu)(lu)对(dui)(dui)级(ji)录(lu)(lu)音(yin)放(fang)大(da)(da)(da)器输出(chu)(chu)信(xin)(xin)号的(de)(de)(de)(de)(de)(de)(de)对(dui)(dui)地(di)分流衰减的(de)(de)(de)(de)(de)(de)(de)具体情(qing)况。显然(ran)，支(zhi)路(lu)(lu)中(zhong)的(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)容C1是(shi)一(yi)只容量较(jiao)大(da)(da)(da)的(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)容（C1电(dian)(dian)(dian)路(lu)(lu)符(fu)号中(zhong)标出(chu)(chu)极(ji)性，说(shuo)明C1是(shi)电(dian)(dian)(dian)解(jie)电(dian)(dian)(dian)容，而电(dian)(dian)(dian)解(jie)电(dian)(dian)(dian)容的(de)(de)(de)(de)(de)(de)(de)容量较(jiao)大(da)(da)(da)），所以C1对(dui)(dui)录(lu)(lu)音(yin)信(xin)(xin)号呈(cheng)通(tong)(tong)路(lu)(lu)，说(shuo)明这一(yi)支(zhi)路(lu)(lu)中(zhong)VD1是(shi)对(dui)(dui)录(lu)(lu)音(yin)信(xin)(xin)号进行分流衰减的(de)(de)(de)(de)(de)(de)(de)关(guan)(guan)键元(yuan)器件。半导体二(er)极(ji)管厂(chang)(chang)家(jia)就找(zhao)成都长九电(dian)(dian)(dian)子科技有(you)限公(gong)司。ESD二(er)极(ji)管厂(chang)(chang)家(jia)直销

从(cong)分(fen)(fen)流(liu)支路(lu)电(dian)(dian)(dian)(dian)路(lu)分(fen)(fen)析(xi)(xi)中要明白一点：从(cong)级(ji)录(lu)(lu)音(yin)(yin)放大(da)器输出的(de)(de)信号(hao)，如果从(cong)VD1支路(lu)分(fen)(fen)流(liu)得多，那么流(liu)入第二(er)(er)级(ji)录(lu)(lu)音(yin)(yin)放大(da)器的(de)(de)录(lu)(lu)音(yin)(yin)信号(hao)就小，反之(zhi)(zhi)则大(da)。VD1存在(zai)(zai)导(dao)通(tong)(tong)与截止(zhi)两种情(qing)况，在(zai)(zai)VD1截止(zhi)时对(dui)录(lu)(lu)音(yin)(yin)信号(hao)无(wu)分(fen)(fen)流(liu)作用(yong)，在(zai)(zai)导(dao)通(tong)(tong)时则对(dui)录(lu)(lu)音(yin)(yin)信号(hao)进(jin)行(xing)分(fen)(fen)流(liu)。在(zai)(zai)VD1正(zheng)(zheng)(zheng)极(ji)上接有电(dian)(dian)(dian)(dian)阻(zu)R1，它给(ji)VD1一个(ge)控(kong)制电(dian)(dian)(dian)(dian)压(ya)，显(xian)然这(zhei)个(ge)电(dian)(dian)(dian)(dian)压(ya)控(kong)制着VD1导(dao)通(tong)(tong)或(huo)截止(zhi)。所(suo)以，R1送来的(de)(de)电(dian)(dian)(dian)(dian)压(ya)是分(fen)(fen)析(xi)(xi)VD1导(dao)通(tong)(tong)、截止(zhi)的(de)(de)关键(jian)所(suo)在(zai)(zai)。分(fen)(fen)析(xi)(xi)这(zhei)个(ge)电(dian)(dian)(dian)(dian)路(lu)比(bi)较大(da)的(de)(de)困难是在(zai)(zai)VD1导(dao)通(tong)(tong)后，利用(yong)了二(er)(er)极(ji)管(guan)(guan)导(dao)通(tong)(tong)后其正(zheng)(zheng)(zheng)向(xiang)电(dian)(dian)(dian)(dian)阻(zu)与导(dao)通(tong)(tong)电(dian)(dian)(dian)(dian)流(liu)之(zhi)(zhi)间的(de)(de)关系(xi)特性进(jin)行(xing)电(dian)(dian)(dian)(dian)路(lu)分(fen)(fen)析(xi)(xi)，即二(er)(er)极(ji)管(guan)(guan)的(de)(de)正(zheng)(zheng)(zheng)向(xiang)电(dian)(dian)(dian)(dian)流(liu)愈(yu)大(da)，其正(zheng)(zheng)(zheng)向(xiang)电(dian)(dian)(dian)(dian)阻(zu)愈(yu)小，流(liu)过VD1的(de)(de)电(dian)(dian)(dian)(dian)流(liu)愈(yu)大(da)，其正(zheng)(zheng)(zheng)极(ji)与负极(ji)之(zhi)(zhi)间的(de)(de)电(dian)(dian)(dian)(dian)阻(zu)愈(yu)小，反之(zhi)(zhi)则大(da)。贵州二(er)(er)极(ji)管(guan)(guan)总(zong)代(dai)理重庆二(er)(er)极(ji)管(guan)(guan)厂家就找成都(dou)长九电(dian)(dian)(dian)(dian)子科技有限公(gong)司。

一(yi)、二(er)极管(guan)(guan)(guan)简(jian)易(yi)(yi)直(zhi)(zhi)流稳压(ya)电(dian)(dian)(dian)路及故(gu)障(zhang)处理二(er)极管(guan)(guan)(guan)简(jian)易(yi)(yi)稳压(ya)电(dian)(dian)(dian)路主要(yao)用于一(yi)些局部的直(zhi)(zhi)流电(dian)(dian)(dian)压(ya)供(gong)给电(dian)(dian)(dian)路中(zhong)(zhong)(zhong)，由于电(dian)(dian)(dian)路简(jian)单，成本低(di)，所以应用比较广。二(er)极管(guan)(guan)(guan)简(jian)易(yi)(yi)稳压(ya)电(dian)(dian)(dian)路中(zhong)(zhong)(zhong)主要(yao)利用二(er)极管(guan)(guan)(guan)的管(guan)(guan)(guan)压(ya)降(jiang)基本不(bu)变特性。二(er)极管(guan)(guan)(guan)的管(guan)(guan)(guan)压(ya)降(jiang)特性：二(er)极管(guan)(guan)(guan)导通(tong)后其管(guan)(guan)(guan)压(ya)降(jiang)基本不(bu)变，对硅(gui)二(er)极管(guan)(guan)(guan)而言这一(yi)管(guan)(guan)(guan)压(ya)降(jiang)是(shi)0.6V左右，对锗二(er)极管(guan)(guan)(guan)而言是(shi)0.2V左右。如图(tu)9-40所示是(shi)由普通(tong)3只二(er)极管(guan)(guan)(guan)构成的简(jian)易(yi)(yi)直(zhi)(zhi)流稳压(ya)电(dian)(dian)(dian)路。电(dian)(dian)(dian)路中(zhong)(zhong)(zhong)的VD1、VD2和(he)VD3是(shi)普通(tong)二(er)极管(guan)(guan)(guan)，它们串联起来后构成一(yi)个简(jian)易(yi)(yi)直(zhi)(zhi)流电(dian)(dian)(dian)压(ya)稳压(ya)电(dian)(dian)(dian)路。

在使(shi)用(yong)二极(ji)(ji)(ji)管(guan)时(shi)(shi)，应(ying)注意(yi)其封装(zhuang)和(he)(he)(he)引脚的限(xian)制，超过限(xian)制会导致二极(ji)(ji)(ji)管(guan)无(wu)法(fa)安装(zhuang)或者(zhe)(zhe)连接不良(liang)。在使(shi)用(yong)二极(ji)(ji)(ji)管(guan)时(shi)(shi)，应(ying)注意(yi)其电(dian)(dian)路(lu)(lu)布局和(he)(he)(he)防(fang)静(jing)电(dian)(dian)措施(shi)，避(bi)免静(jing)电(dian)(dian)干扰和(he)(he)(he)电(dian)(dian)路(lu)(lu)噪声(sheng)影(ying)响二极(ji)(ji)(ji)管(guan)的正常工作(zuo)。在使(shi)用(yong)二极(ji)(ji)(ji)管(guan)时(shi)(shi)，应(ying)注意(yi)其与其他器件的匹配(pei)和(he)(he)(he)配(pei)合(he)，避(bi)免电(dian)(dian)路(lu)(lu)不匹配(pei)或者(zhe)(zhe)不兼(jian)容导致二极(ji)(ji)(ji)管(guan)损坏或者(zhe)(zhe)电(dian)(dian)路(lu)(lu)无(wu)法(fa)正常工作(zuo)。在使(shi)用(yong)二极(ji)(ji)(ji)管(guan)时(shi)(shi)，应(ying)注意(yi)其使(shi)用(yong)场(chang)景和(he)(he)(he)应(ying)用(yong)要求(qiu)，选择(ze)合(he)适的二极(ji)(ji)(ji)管(guan)型号和(he)(he)(he)参数，以满足电(dian)(dian)路(lu)(lu)的需(xu)求(qiu)和(he)(he)(he)性能要求(qiu)。在使(shi)用(yong)二极(ji)(ji)(ji)管(guan)时(shi)(shi)，应(ying)注意(yi)其使(shi)用(yong)方法(fa)和(he)(he)(he)操作(zuo)规范，遵循相关的安全和(he)(he)(he)操作(zuo)规程，确保二极(ji)(ji)(ji)管(guan)的安全和(he)(he)(he)可靠性。重庆(qing)工业(ye)级二极(ji)(ji)(ji)管(guan)厂家就(jiu)找(zhao)成(cheng)都(dou)长九电(dian)(dian)子科技(ji)有限(xian)公司。

二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)是(shi)一(yi)种具有(you)单向导电的(de)(de)(de)(de)(de)二(er)(er)(er)(er)(er)端器(qi)件(jian)，有(you)电子二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)和晶体(ti)(ti)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)之(zhi)分，电子二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)现已很少见到，比(bi)较常(chang)见和常(chang)用(yong)的(de)(de)(de)(de)(de)多是(shi)晶体(ti)(ti)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)。二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)单向导电特性(xing)，几乎(hu)在所(suo)有(you)的(de)(de)(de)(de)(de)电子电路(lu)中(zhong)，都(dou)要(yao)用(yong)到半导体(ti)(ti)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)，它在许(xu)多的(de)(de)(de)(de)(de)电路(lu)中(zhong)起着重要(yao)的(de)(de)(de)(de)(de)作用(yong)，它是(shi)诞生早的(de)(de)(de)(de)(de)半导体(ti)(ti)器(qi)件(jian)之(zhi)一(yi)，其应用(yong)也非常(chang)广(guang)。二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)管(guan)(guan)(guan)(guan)压(ya)降(jiang)(jiang)(jiang)：硅二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)（不发(fa)光类型）正(zheng)向管(guan)(guan)(guan)(guan)压(ya)降(jiang)(jiang)(jiang)0.7V，锗管(guan)(guan)(guan)(guan)正(zheng)向管(guan)(guan)(guan)(guan)压(ya)降(jiang)(jiang)(jiang)为(wei)0.3V，发(fa)光二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)正(zheng)向管(guan)(guan)(guan)(guan)压(ya)降(jiang)(jiang)(jiang)会随不同发(fa)光颜色(se)而不同。主要(yao)有(you)三种颜色(se)，具体(ti)(ti)压(ya)降(jiang)(jiang)(jiang)参考值如下(xia)：红色(se)发(fa)光二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)压(ya)降(jiang)(jiang)(jiang)为(wei)2.0--2.2V，黄色(se)发(fa)光二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)压(ya)降(jiang)(jiang)(jiang)为(wei)1.8—2.0V，绿色(se)发(fa)光二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)压(ya)降(jiang)(jiang)(jiang)为(wei)3.0—3.2V，正(zheng)常(chang)发(fa)光时的(de)(de)(de)(de)(de)额定电流约为(wei)20mA。二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)电压(ya)与电流不是(shi)线性(xing)关系，所(suo)以在将不同的(de)(de)(de)(de)(de)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)并联的(de)(de)(de)(de)(de)时候要(yao)接相适应的(de)(de)(de)(de)(de)电阻。成都(dou)防(fang)雷二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)厂家就(jiu)找成都(dou)长(zhang)九(jiu)电子科技有(you)限公(gong)司(si)。贵(gui)州二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)总代理

四(si)川(chuan)车规二(er)极管(guan)厂(chang)家(jia)就找成都长九(jiu)电子(zi)科技有限(xian)公司(si)。ESD二(er)极管(guan)厂(chang)家(jia)直销

1、正(zheng)(zheng)向(xiang)(xiang)性(xing)(xing)(xing)(xing)外(wai)加(jia)正(zheng)(zheng)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)时(shi)，在(zai)正(zheng)(zheng)向(xiang)(xiang)特(te)性(xing)(xing)(xing)(xing)的(de)起始部分，正(zheng)(zheng)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)很(hen)小(xiao)，不(bu)(bu)足以克服PN结内电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)的(de)阻挡作(zuo)用，正(zheng)(zheng)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)几乎为零(ling)，这(zhei)一段称为死区。这(zhei)个(ge)不(bu)(bu)能使(shi)二极(ji)(ji)(ji)管(guan)(guan)(guan)导通的(de)正(zheng)(zheng)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)称为死区电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)。当正(zheng)(zheng)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)大(da)于死区电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)以后(hou)，PN结内电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)被克服，二极(ji)(ji)(ji)管(guan)(guan)(guan)正(zheng)(zheng)向(xiang)(xiang)导通，电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)随电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)增大(da)而迅速上升。在(zai)正(zheng)(zheng)常(chang)使(shi)用的(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)范围(wei)(wei)内，导通时(shi)二极(ji)(ji)(ji)管(guan)(guan)(guan)的(de)端电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)几乎维持不(bu)(bu)变，这(zhei)个(ge)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)称为二极(ji)(ji)(ji)管(guan)(guan)(guan)的(de)正(zheng)(zheng)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)。2、反(fan)(fan)(fan)(fan)向(xiang)(xiang)性(xing)(xing)(xing)(xing)外(wai)加(jia)反(fan)(fan)(fan)(fan)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)不(bu)(bu)超(chao)过一定(ding)范围(wei)(wei)时(shi)，通过二极(ji)(ji)(ji)管(guan)(guan)(guan)的(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)是少数载流(liu)(liu)(liu)子漂(piao)移(yi)运动所(suo)形成反(fan)(fan)(fan)(fan)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)。由于反(fan)(fan)(fan)(fan)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)很(hen)小(xiao)，二极(ji)(ji)(ji)管(guan)(guan)(guan)处于截止状态。这(zhei)个(ge)反(fan)(fan)(fan)(fan)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)又(you)称为反(fan)(fan)(fan)(fan)向(xiang)(xiang)饱和电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)或(huo)漏电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，二极(ji)(ji)(ji)管(guan)(guan)(guan)的(de)反(fan)(fan)(fan)(fan)向(xiang)(xiang)饱和电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)受温度影响很(hen)大(da)。3、击穿(chuan)外(wai)加(jia)反(fan)(fan)(fan)(fan)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)超(chao)过某一数值时(shi)，反(fan)(fan)(fan)(fan)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)会突然增大(da)，这(zhei)种现象称为电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)击穿(chuan)。引(yin)起电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)击穿(chuan)的(de)临界电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)称为二极(ji)(ji)(ji)管(guan)(guan)(guan)反(fan)(fan)(fan)(fan)向(xiang)(xiang)击穿(chuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)。电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)击穿(chuan)时(shi)二极(ji)(ji)(ji)管(guan)(guan)(guan)失去单向(xiang)(xiang)导电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)(xing)(xing)。如果二极(ji)(ji)(ji)管(guan)(guan)(guan)没(mei)有因(yin)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)击穿(chuan)而引(yin)起过热，则(ze)单向(xiang)(xiang)导电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)(xing)(xing)不(bu)(bu)一定(ding)会被长久破坏，在(zai)撤除外(wai)加(jia)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)后(hou)，其性(xing)(xing)(xing)(xing)能仍可恢复，否则(ze)二极(ji)(ji)(ji)管(guan)(guan)(guan)就损坏了(le)。因(yin)而使(shi)用时(shi)应避免二极(ji)(ji)(ji)管(guan)(guan)(guan)外(wai)加(jia)的(de)反(fan)(fan)(fan)(fan)向(xiang)(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)过高(gao)。ESD二极(ji)(ji)(ji)管(guan)(guan)(guan)厂家直(zhi)销

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