作者fairwarning (一轮明月与蓝夜!!)
看板Grad-ProbAsk
标题[理工] [电子]-fT方面的问题
时间Thu Feb 4 12:22:23 2010
For a bipolar transistor, the unity-gain bandwidth is fT=2G HZ and the
low-frequency current gain is β=150
Find the frequency at which the magnitude of the small-signal current gain
hfe is 10
ANS: f = 1.99 * 10^8 HZ
请问大家..1.99 * 10^8 HZ 怎麽算出的呢? = =
谢谢大家的告知~~
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.117.120.229
1F：推 shinyhaung:fT(增益频宽积) = A(增益) * ω3dB(频宽) 02/04 13:11
2F：推 shinyhaung: f3dB 02/04 13:20
3F：→ fairwarning:我试试看..谢谢您喔 02/04 13:22