[理工] [電子]半導體物理

看板Grad-ProbAsk作者 (電磁霸主)時間14年前 (2012/02/05 15:16), 編輯推噓1(1推 0噓 0→)
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1. Early effect and channel length modulation are commonly observed in modern transistor devices. Which of the following properties is not caused by such effects ? (A) The base width of the BJT is reduced (B) The turn-on voltage of MOSFET is reduced (C) The channel of the MOSFET is pinch-off (D) The emitter current of the BJT is increased 2. The temperature is extremely important to determine the operational characteristics of the electrons. Which of the following is not true if the environmental temperature is raised ? (A) It is harder to induce channel in the MOSFET (B) The saturation current of the BJT is reduced (C) The characteristics of MOSFETs are shifted more than BJTs (D) The temperature compensation can be implemented by circuit designs 手邊沒答案，想來板上問問看 第一題選(B) 第二題選(A)、(B)，但是第二題題目是is，要怎麼選呢 ? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 111.249.156.238
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02/05 15:25, , 1F
1.B吧　　　Vt是跟body effect有關
02/05 15:25, 1F
唉呀，我明明選(B)打成(A).. ※ 編輯: dkcheng 來自: 111.249.156.238 (02/05 15:29)
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