图(tu)(tu)简单地(di)给出了晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)开(kai)(kai)通(tong)和关断(duan)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)的(de)(de)(de)电(dian)压(ya)(ya)(ya)与(yu)(yu)电(dian)流(liu)(liu)(liu)波(bo)形(xing)(xing)。图(tu)(tu)中(zhong)开(kai)(kai)通(tong)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)描述的(de)(de)(de)是(shi)(shi)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)门极(ji)(ji)(ji)在(zai)坐标原点时(shi)(shi)(shi)(shi)刻开(kai)(kai)始(shi)受到(dao)(dao)(dao)(dao)理想阶跃触(chu)(chu)(chu)发(fa)(fa)电(dian)流(liu)(liu)(liu)触(chu)(chu)(chu)发(fa)(fa)的(de)(de)(de)情况；而关断(duan)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)描述的(de)(de)(de)是(shi)(shi)对(dui)(dui)已(yi)导通(tong)的(de)(de)(de)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)，在(zai)外电(dian)路所施(shi)加的(de)(de)(de)电(dian)压(ya)(ya)(ya)在(zai)某一时(shi)(shi)(shi)(shi)刻突然由(you)正(zheng)向(xiang)(xiang)(xiang)变(bian)为反(fan)向(xiang)(xiang)(xiang)的(de)(de)(de)情况（如图(tu)(tu)中(zhong)点划(hua)线(xian)波(bo)形(xing)(xing)）。开(kai)(kai)通(tong)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)的(de)(de)(de)开(kai)(kai)通(tong)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)就是(shi)(shi)载流(liu)(liu)(liu)子不断(duan)扩散的(de)(de)(de)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)。对(dui)(dui)于(yu)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)的(de)(de)(de)开(kai)(kai)通(tong)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)主要关注的(de)(de)(de)是(shi)(shi)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)的(de)(de)(de)开(kai)(kai)通(tong)时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)t。由(you)于(yu)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)内部的(de)(de)(de)正(zheng)反(fan)馈过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)以及(ji)外电(dian)路电(dian)感(gan)的(de)(de)(de)限制，晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)受到(dao)(dao)(dao)(dao)触(chu)(chu)(chu)发(fa)(fa)后(hou)(hou)，其阳(yang)(yang)极(ji)(ji)(ji)电(dian)流(liu)(liu)(liu)只能(neng)逐渐上升。从(cong)门极(ji)(ji)(ji)触(chu)(chu)(chu)发(fa)(fa)电(dian)流(liu)(liu)(liu)上升到(dao)(dao)(dao)(dao)额定值(zhi)(zhi)的(de)(de)(de)10%开(kai)(kai)始(shi)，到(dao)(dao)(dao)(dao)阳(yang)(yang)极(ji)(ji)(ji)电(dian)流(liu)(liu)(liu)上升到(dao)(dao)(dao)(dao)稳态值(zhi)(zhi)的(de)(de)(de)10%（对(dui)(dui)于(yu)阻性负(fu)载相当于(yu)阳(yang)(yang)极(ji)(ji)(ji)电(dian)压(ya)(ya)(ya)降(jiang)到(dao)(dao)(dao)(dao)额定值(zhi)(zhi)的(de)(de)(de)90%），这段时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)称为触(chu)(chu)(chu)发(fa)(fa)延迟(chi)时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)t。阳(yang)(yang)极(ji)(ji)(ji)电(dian)流(liu)(liu)(liu)从(cong)10%上升到(dao)(dao)(dao)(dao)稳态值(zhi)(zhi)的(de)(de)(de)90%所需要的(de)(de)(de)时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)（对(dui)(dui)于(yu)阻性负(fu)载相当于(yu)阳(yang)(yang)极(ji)(ji)(ji)电(dian)压(ya)(ya)(ya)由(you)90%降(jiang)到(dao)(dao)(dao)(dao)10%）称为上升时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)t，开(kai)(kai)通(tong)时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)t定义为两者之(zhi)和，即(ji)t=t+t通(tong)常晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)的(de)(de)(de)开(kai)(kai)通(tong)时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)与(yu)(yu)触(chu)(chu)(chu)发(fa)(fa)脉冲的(de)(de)(de)上升时(shi)(shi)(shi)(shi)间(jian)(jian)(jian)，脉冲峰值(zhi)(zhi)以及(ji)加在(zai)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)两极(ji)(ji)(ji)之(zhi)间(jian)(jian)(jian)的(de)(de)(de)正(zheng)向(xiang)(xiang)(xiang)电(dian)压(ya)(ya)(ya)有关。[1]关断(duan)过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)处于(yu)导通(tong)状态的(de)(de)(de)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)当外加电(dian)压(ya)(ya)(ya)突然由(you)正(zheng)向(xiang)(xiang)(xiang)变(bian)为反(fan)向(xiang)(xiang)(xiang)时(shi)(shi)(shi)(shi)，由(you)于(yu)外电(dian)路电(dian)感(gan)的(de)(de)(de)存(cun)在(zai)，其阳(yang)(yang)极(ji)(ji)(ji)电(dian)流(liu)(liu)(liu)在(zai)衰(shuai)(shuai)减时(shi)(shi)(shi)(shi)存(cun)在(zai)过(guo)(guo)(guo)(guo)渡过(guo)(guo)(guo)(guo)程(cheng)(cheng)(cheng)。阳(yang)(yang)极(ji)(ji)(ji)电(dian)流(liu)(liu)(liu)将逐步衰(shuai)(shuai)减到(dao)(dao)(dao)(dao)零，并在(zai)反(fan)方向(xiang)(xiang)(xiang)流(liu)(liu)(liu)过(guo)(guo)(guo)(guo)反(fan)向(xiang)(xiang)(xiang)恢复电(dian)流(liu)(liu)(liu)，经(jing)过(guo)(guo)(guo)(guo)**大值(zhi)(zhi)I后(hou)(hou)，再反(fan)方向(xiang)(xiang)(xiang)衰(shuai)(shuai)减。同时(shi)(shi)(shi)(shi)。金(jin)属封装晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)又分为螺栓形(xing)(xing)、平板形(xing)(xing)、圆壳形(xing)(xing)等(deng)多种。北(bei)京哪(na)里有WESTCODE西玛晶(jing)(jing)(jing)闸(zha)管(guan)(guan)(guan)/二(er)极(ji)(ji)(ji)管(guan)(guan)(guan)代理商(shang)

而(er)单(dan)向(xiang)(xiang)可(ke)(ke)(ke)(ke)控硅(gui)(gui)经触(chu)发(fa)后只能从其中(zhong)阳极向(xiang)(xiang)阴极单(dan)方行(xing)为(wei)向(xiang)(xiang)导(dao)通，所以(yi)采用(yong)可(ke)(ke)(ke)(ke)控硅(gui)(gui)有(you)单(dan)双(shuang)(shuang)向(xiang)(xiang)关(guan)系之分(fen)(fen)。电(dian)(dian)(dian)(dian)(dian)子生产(chan)中(zhong)常(chang)用(yong)的(de)(de)SCR，单(dan)向(xiang)(xiang)MCR-100，双(shuang)(shuang)向(xiang)(xiang)TLC336等(deng)双(shuang)(shuang)向(xiang)(xiang)可(ke)(ke)(ke)(ke)控硅(gui)(gui)按(an)象限来(lai)分(fen)(fen)，又分(fen)(fen)为(wei)四象三端双(shuang)(shuang)向(xiang)(xiang)可(ke)(ke)(ke)(ke)控硅(gui)(gui)、三象限双(shuang)(shuang)向(xiang)(xiang)可(ke)(ke)(ke)(ke)控硅(gui)(gui);按(an)包装:一般分(fen)(fen)为(wei)半塑料包装、外(wai)绝缘(yuan)全塑料包装;按(an)触(chu)发(fa)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)来(lai)分(fen)(fen)：分(fen)(fen)为(wei)微(wei)触(chu)型、高(gao)(gao)灵敏(min)度型、标准触(chu)发(fa)型;按(an)电(dian)(dian)(dian)(dian)(dian)压(ya)分(fen)(fen)：常(chang)规(gui)工(gong)作电(dian)(dian)(dian)(dian)(dian)压(ya)进行(xing)品种、高(gao)(gao)压(ya)品种。可(ke)(ke)(ke)(ke)控硅(gui)(gui)产(chan)品由于它在(zai)(zai)电(dian)(dian)(dian)(dian)(dian)路(lu)应(ying)用(yong)中(zhong)的(de)(de)效(xiao)率高(gao)(gao)、控制特性好(hao)、寿命长(zhang)、体积小、功能强等(deng)优点(dian)，自上个世纪六十长(zhang)代以(yi)来(lai)，获得了(le)迅猛发(fa)展(zhan)，并已(yi)(yi)形(xing)成了(le)一门(men)单(dan)独的(de)(de)学科。“晶闸(zha)管(guan)(guan)(guan)交(jiao)流(liu)(liu)技(ji)术”。可(ke)(ke)(ke)(ke)控硅(gui)(gui)发(fa)展(zhan)到，在(zai)(zai)工(gong)艺上已(yi)(yi)经非常(chang)成熟，质量更(geng)好(hao)，收率有(you)了(le)很大(da)(da)的(de)(de)提高(gao)(gao)，并向(xiang)(xiang)高(gao)(gao)压(ya)大(da)(da)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)发(fa)展(zhan)。可(ke)(ke)(ke)(ke)控硅(gui)(gui)在(zai)(zai)应(ying)用(yong)电(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)的(de)(de)作用(yong)体现(xian)(xian)在(zai)(zai)：可(ke)(ke)(ke)(ke)控整(zheng)流(liu)(liu)：如(ru)同二(er)极管(guan)(guan)(guan)整(zheng)流(liu)(liu)一样，将交(jiao)流(liu)(liu)整(zheng)流(liu)(liu)为(wei)直(zhi)流(liu)(liu)，并且在(zai)(zai)交(jiao)流(liu)(liu)电(dian)(dian)(dian)(dian)(dian)压(ya)不变的(de)(de)情况下，有(you)效(xiao)地控制直(zhi)流(liu)(liu)输出电(dian)(dian)(dian)(dian)(dian)压(ya)的(de)(de)大(da)(da)小即(ji)可(ke)(ke)(ke)(ke)控整(zheng)流(liu)(liu)，实现(xian)(xian)交(jiao)流(liu)(liu)→可(ke)(ke)(ke)(ke)变直(zhi)流(liu)(liu)之转变;无触(chu)点(dian)功率静态开关(guan)（固(gu)态开关(guan)）：作为(wei)功率开关(guan)元件(jian)，可(ke)(ke)(ke)(ke)控硅(gui)(gui)可(ke)(ke)(ke)(ke)以(yi)代替接触(chu)器(qi)、继(ji)电(dian)(dian)(dian)(dian)(dian)器(qi)用(yong)于开关(guan)频率很高(gao)(gao)的(de)(de)场合。因此可(ke)(ke)(ke)(ke)控硅(gui)(gui)元件(jian)被(bei)广应(ying)用(yong)于各种电(dian)(dian)(dian)(dian)(dian)子设备和电(dian)(dian)(dian)(dian)(dian)子产(chan)品的(de)(de)电(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)，多作可(ke)(ke)(ke)(ke)控整(zheng)流(liu)(liu)、逆变、变频、调压(ya)、无触(chu)点(dian)开关(guan)等(deng)用(yong)途。北(bei)京(jing)哪里有(you)WESTCODE西玛晶闸(zha)管(guan)(guan)(guan)/二(er)极管(guan)(guan)(guan)代理商晶闸(zha)管(guan)(guan)(guan)在(zai)(zai)工(gong)业中(zhong)的(de)(de)应(ying)用(yong)越来(lai)越广，随着行(xing)业的(de)(de)应(ying)用(yong)范(fan)围增(zeng)大(da)(da)。

做出了(le)能(neng)适(shi)应(ying)于高(gao)(gao)频(pin)应(ying)用(yong)的(de)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)，我们将(jiang)它称为(wei)快(kuai)速(su)(su)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)。它具有(you)关(guan)(guan)断(duan)时间（toff）短(duan)、导(dao)(dao)通(tong)速(su)(su)度(du)快(kuai)．能(neng)耐较(jiao)高(gao)(gao)的(de)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)上(shang)升率（dI／dt）、能(neng)耐较(jiao)高(gao)(gao)的(de)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)上(shang)升率（dv／dt）、抗(kang)干(gan)扰(rao)能(neng)力较(jiao)好等特点(dian)(dian)。快(kuai)速(su)(su)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)的(de)生产(chan)和应(ying)用(yong)都进展(zhan)很快(kuai)。目前(qian)，已有(you)了(le)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)几百安培(pei)、耐压(ya)1千(qian)余伏，关(guan)(guan)断(duan)时间为(wei)20微妙的(de)大(da)(da)功(gong)率快(kuai)速(su)(su)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)，同时还(hai)做出了(le)比较(jiao)高(gao)(gao)工作频(pin)率可(ke)达几十千(qian)赫兹供(gong)高(gao)(gao)频(pin)逆(ni)(ni)变(bian)用(yong)的(de)元(yuan)件。其产(chan)品广应(ying)用(yong)于大(da)(da)功(gong)率直(zhi)流(liu)(liu)(liu)开(kai)关(guan)(guan)、大(da)(da)功(gong)率中频(pin)感应(ying)加热电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)、超声波电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)、激光电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)、雷达调制器及(ji)直(zhi)流(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)动车(che)辆调速(su)(su)等领域(yu)。3．逆(ni)(ni)导(dao)(dao)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)以往的(de)为(wei)了(le)便于调速(su)(su)采(cai)用(yong)直(zhi)流(liu)(liu)(liu)供(gong)电(dian)(dian)(dian)(dian)(dian)(dian)，用(yong)直(zhi)流(liu)(liu)(liu)开(kai)关(guan)(guan)动作增(zeng)加或(huo)减小电(dian)(dian)(dian)(dian)(dian)(dian)路电(dian)(dian)(dian)(dian)(dian)(dian)阻，改变(bian)电(dian)(dian)(dian)(dian)(dian)(dian)路电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)来控制车(che)辆的(de)速(su)(su)度(du)。但它有(you)不(bu)能(neng)平滑(hua)起动和加速(su)(su)。自(zi)有(you)了(le)，了(le)逆(ni)(ni)导(dao)(dao)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)不(bu)了(le)上(shang)述缺(que)点(dian)(dian)，而(er)且(qie)还(hai)逆(ni)(ni)导(dao)(dao)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)是(shi)在普通(tong)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)上(shang)反向(xiang)并联(lian)一只二极(ji)管(guan)(guan)而(er)成，特点(dian)(dian)是(shi)能(neng)反向(xiang)导(dao)(dao)通(tong)大(da)(da)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)。由于它的(de)阳极(ji)和阴极(ji)接入(ru)反向(xiang)并联(lian)的(de)二极(ji)管(guan)(guan)，可(ke)对电(dian)(dian)(dian)(dian)(dian)(dian)感负(fu)载关(guan)(guan)断(duan)时产(chan)生的(de)大(da)(da)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)、高(gao)(gao)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)进行快(kuai)速(su)(su)释放。城市(shi)电(dian)(dian)(dian)(dian)(dian)(dian)车(che)和地铁机车(che)采(cai)用(yong)逆(ni)(ni)导(dao)(dao)晶(jing)闸(zha)(zha)(zha)管(guan)(guan)控制和调节(jie)车(che)速(su)(su)，能(neng)够克服开(kai)关(guan)(guan)体积大(da)(da)、寿命短(duan)，而(er)且(qie)低(di)速(su)(su)运(yun)行时耗电(dian)(dian)(dian)(dian)(dian)(dian)大(da)(da)（减速(su)(su)时消耗在启动电(dian)(dian)(dian)(dian)(dian)(dian)阻上(shang)）等缺(que)点(dian)(dian)，从而(er)降低(di)了(le)功(gong)耗，提高(gao)(gao)了(le)机车(che)可(ke)靠(kao)性(xing)。

Ia与Il成(cheng)正(zheng)比(bi)，即(ji)当光(guang)(guang)(guang)(guang)(guang)电(dian)(dian)二(er)(er)极(ji)(ji)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)电(dian)(dian)流增(zeng)大(da)(da)(da)时(shi)(shi)，光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)输出电(dian)(dian)流也(ye)(ye)相(xiang)应(ying)增(zeng)大(da)(da)(da)，同时(shi)(shi)Il的(de)(de)(de)(de)(de)增(zeng)大(da)(da)(da)，使BGl、BG2的(de)(de)(de)(de)(de)电(dian)(dian)流放大(da)(da)(da)系数a1、a2也(ye)(ye)增(zeng)大(da)(da)(da)。当al与a2之(zhi)和接近l时(shi)(shi)，光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)Ia达到(dao)**大(da)(da)(da)，即(ji)完全导通(tong)(tong)(tong)。能使光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)导通(tong)(tong)(tong)的(de)(de)(de)(de)(de)**小(xiao)光(guang)(guang)(guang)(guang)(guang)照度，称其(qi)为(wei)导通(tong)(tong)(tong)光(guang)(guang)(guang)(guang)(guang)照度。光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)与普(pu)通(tong)(tong)(tong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)一(yi)样，一(yi)经触发(fa)，即(ji)成(cheng)通(tong)(tong)(tong)导状态(tai)。只(zhi)要有(you)(you)足(zu)够强度的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)源(yuan)照射一(yi)下(xia)管(guan)(guan)(guan)子(zi)的(de)(de)(de)(de)(de)受(shou)光(guang)(guang)(guang)(guang)(guang)窗口，它就(jiu)立即(ji)成(cheng)为(wei)通(tong)(tong)(tong)导状态(tai)，而后即(ji)使撤离光(guang)(guang)(guang)(guang)(guang)源(yuan)也(ye)(ye)能维(wei)持导通(tong)(tong)(tong)，除非加在(zai)阳极(ji)(ji)和阴极(ji)(ji)之(zhi)间的(de)(de)(de)(de)(de)电(dian)(dian)压(ya)为(wei)零或(huo)反相(xiang)，才能关闭(bi)。3．光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)特(te)性为(wei)了(le)使光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)能在(zai)微弱的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)照下(xia)触发(fa)导通(tong)(tong)(tong)，因此必(bi)须(xu)使光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)在(zai)极(ji)(ji)小(xiao)的(de)(de)(de)(de)(de)控(kong)(kong)制(zhi)电(dian)(dian)流下(xia)能可(ke)(ke)靠(kao)地(di)导通(tong)(tong)(tong)。这(zhei)(zhei)样光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)受(shou)到(dao)了(le)高(gao)温(wen)和耐压(ya)的(de)(de)(de)(de)(de)限制(zhi)，在(zai)目(mu)前的(de)(de)(de)(de)(de)条件下(xia)，不(bu)可(ke)(ke)能与普(pu)通(tong)(tong)(tong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)一(yi)样做成(cheng)大(da)(da)(da)功率的(de)(de)(de)(de)(de)。光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)除了(le)触发(fa)信号不(bu)同以外(wai)，其(qi)它特(te)性基(ji)本(ben)与普(pu)通(tong)(tong)(tong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)是(shi)(shi)相(xiang)同的(de)(de)(de)(de)(de)，因此在(zai)使用(yong)(yong)(yong)时(shi)(shi)可(ke)(ke)按照普(pu)通(tong)(tong)(tong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)选择(ze)，只(zhi)要注意它是(shi)(shi)光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)这(zhei)(zhei)个特(te)点就(jiu)行了(le)。光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)对光(guang)(guang)(guang)(guang)(guang)源(yuan)的(de)(de)(de)(de)(de)波(bo)长有(you)(you)一(yi)定的(de)(de)(de)(de)(de)要求，即(ji)有(you)(you)选择(ze)性。波(bo)长在(zai)——，都是(shi)(shi)光(guang)(guang)(guang)(guang)(guang)控(kong)(kong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)较为(wei)理想的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)源(yuan)。使用(yong)(yong)(yong)注意事项/晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)(zha)管(guan)(guan)(guan)编辑选用(yong)(yong)(yong)可(ke)(ke)控(kong)(kong)硅的(de)(de)(de)(de)(de)额定电(dian)(dian)压(ya)时(shi)(shi)，应(ying)参考实际(ji)工(gong)作条件下(xia)的(de)(de)(de)(de)(de)峰值(zhi)电(dian)(dian)压(ya)的(de)(de)(de)(de)(de)大(da)(da)(da)小(xiao)，并留出一(yi)定的(de)(de)(de)(de)(de)余量。1、选用(yong)(yong)(yong)可(ke)(ke)控(kong)(kong)硅的(de)(de)(de)(de)(de)额定电(dian)(dian)流时(shi)(shi)。目(mu)前，市场上有(you)(you)光(guang)(guang)(guang)(guang)(guang)伏防反二(er)(er)极(ji)(ji)管(guan)(guan)(guan)模(mo)(mo)块(kuai)与普(pu)通(tong)(tong)(tong)二(er)(er)极(ji)(ji)管(guan)(guan)(guan)模(mo)(mo)块(kuai)两(liang)种类型可(ke)(ke)供选择(ze)。

他发(fa)生在(zai)(zai)芯片外(wai)圆倒角(jiao)(jiao)处(chu)，有(you)细小光洁小孔。用(yong)放(fang)大镜可(ke)看到(dao)(dao)倒角(jiao)(jiao)面(mian)上有(you)细细金(jin)属物划(hua)痕。这是(shi)(shi)制(zhi)造厂(chang)家安装不慎所造成(cheng)的(de)(de)(de)。它导(dao)(dao)致电(dian)(dian)(dian)压击穿。主要用(yong)途/晶(jing)闸(zha)(zha)管(guan)编辑(ji)普(pu)通(tong)晶(jing)闸(zha)(zha)管(guan)**基(ji)本的(de)(de)(de)用(yong)途就(jiu)(jiu)是(shi)(shi)可(ke)控整(zheng)流(liu)。大家熟悉(xi)的(de)(de)(de)二极(ji)(ji)(ji)(ji)管(guan)整(zheng)流(liu)电(dian)(dian)(dian)路属于不可(ke)控整(zheng)流(liu)电(dian)(dian)(dian)路。如(ru)果(guo)把二极(ji)(ji)(ji)(ji)管(guan)换成(cheng)晶(jing)闸(zha)(zha)管(guan)，就(jiu)(jiu)可(ke)以构成(cheng)可(ke)控整(zheng)流(liu)电(dian)(dian)(dian)路、逆变、电(dian)(dian)(dian)机调速、电(dian)(dian)(dian)机励(li)磁、无触(chu)(chu)点开关及自动(dong)控制(zhi)等方面(mian)。现(xian)在(zai)(zai)我画一个**简单(dan)(dan)的(de)(de)(de)单(dan)(dan)相半波可(ke)控整(zheng)流(liu)电(dian)(dian)(dian)路〔图(tu)4(a）〕。在(zai)(zai)正(zheng)(zheng)(zheng)弦交流(liu)电(dian)(dian)(dian)压U2的(de)(de)(de)正(zheng)(zheng)(zheng)半周(zhou)(zhou)期间，如(ru)果(guo)VS的(de)(de)(de)控制(zhi)极(ji)(ji)(ji)(ji)没有(you)输(shu)入触(chu)(chu)发(fa)脉(mai)冲(chong)(chong)Ug，VS仍然(ran)不能导(dao)(dao)通(tong)，只(zhi)有(you)在(zai)(zai)U2处(chu)于正(zheng)(zheng)(zheng)半周(zhou)(zhou)，在(zai)(zai)控制(zhi)极(ji)(ji)(ji)(ji)外(wai)加(jia)触(chu)(chu)发(fa)脉(mai)冲(chong)(chong)Ug时(shi)(shi)(shi)(shi)，晶(jing)闸(zha)(zha)管(guan)被(bei)触(chu)(chu)发(fa)导(dao)(dao)通(tong)。现(xian)在(zai)(zai)，画出它的(de)(de)(de)波形(xing)图(tu)〔图(tu)4(c）及（d）〕，可(ke)以看到(dao)(dao)，只(zhi)有(you)在(zai)(zai)触(chu)(chu)发(fa)脉(mai)冲(chong)(chong)Ug到(dao)(dao)来(lai)时(shi)(shi)(shi)(shi)，负载RL上才(cai)有(you)电(dian)(dian)(dian)压UL输(shu)出（波形(xing)图(tu)上阴(yin)影部(bu)(bu)分）。Ug到(dao)(dao)来(lai)得(de)早，晶(jing)闸(zha)(zha)管(guan)导(dao)(dao)通(tong)的(de)(de)(de)时(shi)(shi)(shi)(shi)间就(jiu)(jiu)早；Ug到(dao)(dao)来(lai)得(de)晚，晶(jing)闸(zha)(zha)管(guan)导(dao)(dao)通(tong)的(de)(de)(de)时(shi)(shi)(shi)(shi)间就(jiu)(jiu)晚。通(tong)过改变控制(zhi)极(ji)(ji)(ji)(ji)上触(chu)(chu)发(fa)脉(mai)冲(chong)(chong)Ug到(dao)(dao)来(lai)的(de)(de)(de)时(shi)(shi)(shi)(shi)间，就(jiu)(jiu)可(ke)以调节负载上输(shu)出电(dian)(dian)(dian)压的(de)(de)(de)平均值UL（阴(yin)影部(bu)(bu)分的(de)(de)(de)面(mian)积大小）。在(zai)(zai)电(dian)(dian)(dian)工(gong)技术中，常把交流(liu)电(dian)(dian)(dian)的(de)(de)(de)半个周(zhou)(zhou)期定为(wei)180°，称(cheng)为(wei)电(dian)(dian)(dian)角(jiao)(jiao)度。这样，在(zai)(zai)U2的(de)(de)(de)每个正(zheng)(zheng)(zheng)半周(zhou)(zhou)，从(cong)零值开始到(dao)(dao)触(chu)(chu)发(fa)脉(mai)冲(chong)(chong)到(dao)(dao)来(lai)瞬间所经(jing)历的(de)(de)(de)电(dian)(dian)(dian)角(jiao)(jiao)度称(cheng)为(wei)控制(zhi)角(jiao)(jiao)α；在(zai)(zai)每个正(zheng)(zheng)(zheng)半周(zhou)(zhou)内晶(jing)闸(zha)(zha)管(guan)导(dao)(dao)通(tong)的(de)(de)(de)电(dian)(dian)(dian)角(jiao)(jiao)度叫导(dao)(dao)通(tong)角(jiao)(jiao)θ。很明显。晶(jing)闸(zha)(zha)管(guan)的(de)(de)(de)主要参(can)数有(you)反(fan)(fan)向最大电(dian)(dian)(dian)压，是(shi)(shi)指门(men)极(ji)(ji)(ji)(ji)开路时(shi)(shi)(shi)(shi)，允许加(jia)在(zai)(zai)阳极(ji)(ji)(ji)(ji)、阴(yin)极(ji)(ji)(ji)(ji)之间的(de)(de)(de)比较大反(fan)(fan)向电(dian)(dian)(dian)压。北(bei)京哪里有(you)WESTCODE西玛晶(jing)闸(zha)(zha)管(guan)/二极(ji)(ji)(ji)(ji)管(guan)代理商

整(zheng)流二极管模块是利用二极管正向导通，反向截(jie)止的(de)原理(li)，将交流电能转(zhuan)变为质量电能的(de)半导体器件(jian)。北京哪里有(you)WESTCODE西玛晶(jing)闸管/二极管代理(li)商

1)断态重(zhong)复(fu)峰(feng)值(zhi)(zhi)(zhi)(zhi)电(dian)(dian)压(ya)(ya)UDRM在(zai)控制(zhi)(zhi)极(ji)断路(lu)和晶(jing)(jing)(jing)闸(zha)管(guan)(guan)正(zheng)(zheng)向(xiang)阻(zu)断的(de)(de)条(tiao)件(jian)(jian)(jian)下，可以(yi)重(zhong)复(fu)加在(zai)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)两端的(de)(de)正(zheng)(zheng)向(xiang)峰(feng)值(zhi)(zhi)(zhi)(zhi)电(dian)(dian)压(ya)(ya)，其数(shu)值(zhi)(zhi)(zhi)(zhi)比正(zheng)(zheng)向(xiang)转折电(dian)(dian)压(ya)(ya)小100V。(2)反向(xiang)重(zhong)复(fu)峰(feng)值(zhi)(zhi)(zhi)(zhi)电(dian)(dian)压(ya)(ya)URRM在(zai)控制(zhi)(zhi)极(ji)断路(lu)时(shi)，可以(yi)重(zhong)复(fu)加在(zai)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)元(yuan)件(jian)(jian)(jian)上的(de)(de)反向(xiang)峰(feng)值(zhi)(zhi)(zhi)(zhi)电(dian)(dian)压(ya)(ya)，此(ci)电(dian)(dian)压(ya)(ya)数(shu)值(zhi)(zhi)(zhi)(zhi)规定(ding)比反向(xiang)击(ji)穿电(dian)(dian)压(ya)(ya)小100V。通(tong)(tong)常把UDRM与URRM中较小的(de)(de)一(yi)(yi)个数(shu)值(zhi)(zhi)(zhi)(zhi)标作器(qi)件(jian)(jian)(jian)型号上的(de)(de)额(e)定(ding)电(dian)(dian)压(ya)(ya)。由于瞬时(shi)过电(dian)(dian)压(ya)(ya)也会使(shi)晶(jing)(jing)(jing)闸(zha)管(guan)(guan)遭到破坏，因(yin)而在(zai)选用(yong)(yong)的(de)(de)时(shi)候(hou)，额(e)定(ding)电(dian)(dian)压(ya)(ya)一(yi)(yi)个应该为(wei)(wei)正(zheng)(zheng)常工作峰(feng)值(zhi)(zhi)(zhi)(zhi)电(dian)(dian)压(ya)(ya)的(de)(de)2～3倍，作为(wei)(wei)安全系数(shu)。(3)额(e)定(ding)通(tong)(tong)态平(ping)(ping)均电(dian)(dian)流(liu)(liu)(liu)(额(e)定(ding)正(zheng)(zheng)向(xiang)平(ping)(ping)均电(dian)(dian)流(liu)(liu)(liu))IT在(zai)环(huan)境温(wen)度不大于40oC和标准散热即全导通(tong)(tong)的(de)(de)条(tiao)件(jian)(jian)(jian)下，晶(jing)(jing)(jing)闸(zha)管(guan)(guan)元(yuan)件(jian)(jian)(jian)可以(yi)连续(xu)通(tong)(tong)过的(de)(de)工频(pin)正(zheng)(zheng)弦(xian)半波电(dian)(dian)流(liu)(liu)(liu)(在(zai)一(yi)(yi)个周(zhou)期内)的(de)(de)平(ping)(ping)均值(zhi)(zhi)(zhi)(zhi)，称(cheng)为(wei)(wei)额(e)定(ding)通(tong)(tong)态平(ping)(ping)均电(dian)(dian)流(liu)(liu)(liu)IT，简(jian)称(cheng)额(e)定(ding)电(dian)(dian)流(liu)(liu)(liu)。(4)维(wei)持(chi)(chi)(chi)电(dian)(dian)流(liu)(liu)(liu)IH在(zai)规定(ding)的(de)(de)环(huan)境温(wen)度和控制(zhi)(zhi)极(ji)断路(lu)的(de)(de)条(tiao)件(jian)(jian)(jian)下，维(wei)持(chi)(chi)(chi)元(yuan)件(jian)(jian)(jian)继续(xu)导通(tong)(tong)的(de)(de)**小电(dian)(dian)流(liu)(liu)(liu)称(cheng)为(wei)(wei)维(wei)持(chi)(chi)(chi)电(dian)(dian)流(liu)(liu)(liu)IH。一(yi)(yi)般为(wei)(wei)几十毫安～一(yi)(yi)百(bai)多毫安，其数(shu)值(zhi)(zhi)(zhi)(zhi)与元(yuan)件(jian)(jian)(jian)的(de)(de)温(wen)度成反比，在(zai)120摄氏度时(shi)维(wei)持(chi)(chi)(chi)电(dian)(dian)流(liu)(liu)(liu)约为(wei)(wei)25摄氏度时(shi)的(de)(de)一(yi)(yi)半。当晶(jing)(jing)(jing)闸(zha)管(guan)(guan)的(de)(de)正(zheng)(zheng)向(xiang)电(dian)(dian)流(liu)(liu)(liu)小于这(zhei)个电(dian)(dian)流(liu)(liu)(liu)时(shi)，晶(jing)(jing)(jing)闸(zha)管(guan)(guan)将自(zi)动关(guan)断。晶(jing)(jing)(jing)闸(zha)管(guan)(guan)的(de)(de)选用(yong)(yong)/晶(jing)(jing)(jing)闸(zha)管(guan)(guan)编辑(1)选择晶(jing)(jing)(jing)闸(zha)管(guan)(guan)的(de)(de)类(lei)型：晶(jing)(jing)(jing)闸(zha)管(guan)(guan)有(you)多种类(lei)型，应根据(ju)应用(yong)(yong)电(dian)(dian)路(lu)的(de)(de)具体要(yao)求合(he)理选用(yong)(yong)。北京哪里有(you)WESTCODE西(xi)玛晶(jing)(jing)(jing)闸(zha)管(guan)(guan)/二(er)极(ji)管(guan)(guan)代理商

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