苏州创芯奇半导体有限公司
电压测方法
可控硅为什么其有“以小控大”的可控性呢？下面我们用图表-27来简单分析可控硅的工作原理。
首先，可以把从阴极向上数的***、二、三层看面是一只NPN型号晶体管，而二、三四层组成另一只PNP型晶体管。其中第二、第三层为两管交迭共用。当在阳极和阴极之间加上一个，又在控制极G和之间（相当BG1的基一射间）输入一个正的触发信号，BG1将产生电流Ib1，经放大，BG1将有一个放大了β1倍的电流IC1。因为BG1集电极与BG2基极相连，IC1又是BG2的基极电流Ib2。BG2又把比Ib2（Ib1）放大了β2的集电极电流IC2送回BG1的基极放大。如此循环放大，直到BG1、BG2完全导通。实际这一过程是“一触即发”的过程，对可控硅来说，触发信号加入，可控硅立即导通。导通的时间主要决定于可控硅的性能。
优势代理产品为大功 率平板式晶闸管、可控硅、二极管、IGBT，
品牌 如EUPEC、西 门康、西码 、三菱、ABB、三社、IR、 明纬开关电源等国外功率模块。
在国 内严格按照国际标准生产：ZP型普通整流管、ZK型 快速整流管、KP型普通晶闸管、
KS型双向晶闸管、KK型快 速晶闸管、KG型高 频 晶闸 管、桥式整流器、电力模块、肖特基模块、
SF超快***二极管、电焊 机专用模块、固态继电器、固态调压器、型材散热器等电力半导体器件。
本公司坚持以‘诚信为本、质量首位、价格合理’的经营理念
期待与贵公司的合作，一步一个脚印，做大做强，再创辉煌！
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