蘇州創(chuàng)芯奇半導(dǎo)體有限公司

電壓測方法

可控硅為什么其有“以小控大”的可控性呢？下面我們用圖表-27來簡單分析可控硅的工作原理。

首先，可以把從陰極向上數(shù)的第一、二、三層看面是一只NPN型號(hào)晶體管，而二、三四層組成另一只PNP型晶體管。其中第二、第三層為兩管交迭共用。當(dāng)在陽極和陰極之間加上一個(gè)，又在控制極G和之間（相當(dāng)BG1的基一射間）輸入一個(gè)正的觸發(fā)信號(hào)，BG1將產(chǎn)生電流Ib1，經(jīng)放大，BG1將有一個(gè)放大了β1倍的電流IC1。因?yàn)锽G1集電極與BG2基極相連，IC1又是BG2的基極電流Ib2。BG2又把比Ib2（Ib1）放大了β2的集電極電流IC2送回BG1的基極放大。如此循環(huán)放大，直到BG1、BG2完全導(dǎo)通。實(shí)際這一過程是“一觸即發(fā)”的過程，對可控硅來說，觸發(fā)信號(hào)加入，可控硅立即導(dǎo)通。導(dǎo)通的時(shí)間主要決定于可控硅的性能。

優(yōu)勢代理產(chǎn)品為大功 率平板式晶閘管、可控硅、二極管、IGBT，

品牌 如EUPEC、西 門康、西碼 、三菱、ABB、三社、IR、 明緯開關(guān)電源等國外功率模塊。

在國 內(nèi)嚴(yán)格按照國際標(biāo)準(zhǔn)生產(chǎn)：ZP型普通整流管、ZK型  快速整流管、KP型普通晶閘管、

KS型雙向晶閘管、KK型快  速晶閘管、KG型高 頻 晶閘 管、橋式整流器、電力模塊、肖特基模塊、

SF超快恢復(fù)二極管、電焊 機(jī)專用模塊、固態(tài)繼電器、固態(tài)調(diào)壓器、型材散熱器等電力半導(dǎo)體器件。 

本公司堅(jiān)持以‘誠信為本、質(zhì)量首位、價(jià)格合理’的經(jīng)營理念

期待與貴公司的合作，一步一個(gè)腳印，做大做強(qiáng)，再創(chuàng)輝煌！  

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