標題: beta的变化 [打印本頁] 作者: zhdq_413 時間: 2007-12-7 11:50 AM 標題: beta的变化 可不可以帮忙解释一下,当IC比较大的时候,bjt的beta下降的原因,谢谢了作者: zhdq_413 時間: 2007-12-17 03:53 PM
是不是我讲的不太详细呢？ 6 P6 f5 A. I* W6 e, _+ owhen the minority carriers density inject into base region approaches the majority cairriers density thereby increaseing the majority carrier charge in the base ,thus reduce the emitter efficiency and beta5 g+ Q- G; ~6 y5 `7 b
i can't understand it ,would you please help me ,thank you !