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110 年 - 110 國立中山大學碩士暨碩士專班招生考試_電機系碩士班/甲組:電子學(甲組)#104341 

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【非選題】
1.

1.(20pt) Figure 1 is a summing op-amplifier to produce the output v0 = -10v1 -4v2+5v3 + 2v4・ The resistors R1 = 20 kΩ and R3 = 80 kΩ. The op-amplifier is ideal. Please determine the values of resistors R2, R4, R5 and R6. (5pt*4)
61a5929cbbe69.jpg



【非選題】
2.

2.(30pt) For the circuit shown in Figure 2, the transistor parameters of Q1 and Q2 are:61a58ecc089e4.jpg = 1.2 V, 61a58eef64e3b.jpg = 1.6 mA/V2, and neglect channel length modulation effect. Let R1 + R2 + R3 = 300 kΩ and Rs = 10 kΩ. 61a58f40e9c92.jpg = 5 V, -Vs =-5 V. (a) Please determine the R1, R2, R3 and RD such that DC current ID = 0.4 mA and DC voltage61a58fa186ef5.jpg Coupling capacitor Cc is large enough that can be treated as short circuit for AC analysis. Please also find the voltage gain 61a58fc82df6d.jpg of small signal. (5pt*6)
61a592d298ce4.jpg



【非選題】
3.

3.(25pt) The circuit configuration to be designed is shown in Figure 3 and the 61a58ff14f398.jpg = -40. Assumingβ = 100, 61a5902542e15.jpg 0.7 V, and neglect Early effect. Thermal voltage VT = 26 mV. Please find the value of61a5905a1422e.jpg = 4 V and IE = 0.2 mA. And calculate the corresponding values of the AC voltage gain 61a590947ea86.jpg input resistance 61a590bd0a7ce.jpg. Coupling capacitor Cc is large enough that can be treated as short circuit for AC analysis. (5pt*5)
61a592f742696.jpg



【非選題】
4.

4.(25pt) For the circuit shown in Figure 4, the parameters are:61a590ef0d59b.jpg = 0.1 kΩ, R1 = 40 kΩ, R2 = 5.72 kΩ, RE = 0.5 kΩ, Rc = 5 kΩ, and RL = 10 kΩ. The transistor parameters are: β = 150, 61a59156c79e9.jpg 0.7 V, neglect Early effect, Cπ = 35 pF, Cμ = 4 pF, Cc= 1 μF. Thermal voltage VT = 26 mV. Please determine the lower and upper corner frequency (fL and fH), midband gain61a59258f3898.jpg. (10pt, 10pt, 5pt)
61a5931b62026.jpg



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【已刪除】23. ( )一電磁鐵與兩個永久磁鐵排列在一起,磁力線的分布如右圖,則磁極甲、乙、丙、丁的磁性依序為? (A) S、N、N、S (B) N、S、N、S ...

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110 年 - 110 國立中山大學碩士暨碩士專班招生考試_電機系碩士班/甲組:電子學(甲組)#104341-阿摩線上測驗

110 年 - 110 國立中山大學碩士暨碩士專班招生考試_電機系碩士班/甲組:電子學(甲組)#104341