R4.07-2A13
![](https://miyabisazanka.com/wp-content/uploads/2023/08/image-129.png)
R3.01-1A13
![](https://miyabisazanka.com/wp-content/uploads/2023/08/image-330.png)
R1.07-1A13
![](https://miyabisazanka.com/wp-content/uploads/2023/08/image-439.png)
R4.01-1A13
![](https://miyabisazanka.com/wp-content/uploads/2023/08/image-212.png)
R2.11-1A14
![](https://miyabisazanka.com/wp-content/uploads/2023/08/image-386.png)
解答
R4.07-2A13
\(4 g_mV_i \frac{g_mR_S}{1+g_mR_S} \frac{R_S}{1+g_mR_S}\)
![](https://miyabisazanka.com/wp-content/uploads/2024/01/image-5.png)
![](https://miyabisazanka.com/wp-content/uploads/2023/08/image-129.png)
ワンポイント解説
ドレイン接地は、\(g_mとR_Sのバトンタッチで1位となる\)
R3.01-1A13
\(3 g_mV_i \frac{g_mR_S}{1+g_mR_S} \frac{R_S}{1+g_mR_S}\)
R1.07-1A13
\(1 g_mV_i \frac{g_mR_S}{1+g_mR_S} \frac{R_S}{1+g_mR_S}\)
R4.01-1A13
\(5 A_V=\frac{g_mR_S}{1+g_mR_S} Z_O=\frac{R_S}{1+g_mR_S}\)
![](https://miyabisazanka.com/wp-content/uploads/2023/08/image-212.png)
R2.11-1A14
\(2 A_V=\frac{g_mR_S}{1+g_mR_S} Z_O=\frac{R_S}{1+g_mR_S}\)
検索用キーワード
ドレイン接地増幅 図1に示す電界効果トランジスタ(FET)を用いたドレイン接地増幅回路の出力インピーダンス ドレイン接地増幅回路の原理図において、電圧増幅度
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