Đề kiểm tra giữa học kỳ môn Mạch điện tử 1
1. Hãy đọc tất cả các câu hỏi trước khi làm bài. Đề thi này gồm có 4 câu với tổng số điểm bằng 12.
2. Phân bố tốt thời gian làm bài theo phân bố của điểm số.
3. Đối với các phần tính toán, hãy dẫn ra các công thức tính toán trước khi thay giá trị số. Tất cả các kết
quả số không được dẫn ra từ công thức sẽ không được tính điểm.
4. Tờ A4 viết tay SV sử dụng không được nhàu nát hoặc bị gấp. Nếu không sẽ được xem như là tài liệu.
5. Chúc các bạn làm bài tốt
Tóm tắt nội dung Đề kiểm tra giữa học kỳ môn Mạch điện tử 1, để xem tài liệu hoàn chỉnh bạn click vào nút "TẢI VỀ" ở trên
.................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... 466 Part 1 Semiconductor Devices and Basic Applications (a) Find the small-signal voltage gain Av1 = Vo1/Vi . (b) Determine the small-signal voltage gain Av2 = Vo2/Vo1. (c) Determine the overall small- signal voltage gain Av = Vo2/Vi . *6.75 The parameters for each transistor in the circuit shown in Figure P6.75 are β = 100 and VA =∞. (a) Determine the small-signal parameters gm , rpi , and ro for both transistors. (b) Determine the small-signal voltage gain Av1 = vo1/vs , assuming vo1 is connected to an open circuit, and determine the gain Av2 = vo/vo1. (c) Determine the overall small-signal voltage gain Av = vo/vs . Compare the overall gain with the product Av1 · Av2, using the values calculated in part (b). + – R1 = 80 kΩ R2 = 20 kΩ RC1 = 2 kΩ CC1 CC3vo1 CC2 CE1 RC2 = 4 kΩ VCC = +10 V RE2 = 0.5 kΩ R3 = 85 kΩ R4 = 15 kΩRE1 = 1 kΩ Q1 CE2 vo vs RL = 4 kΩ Q2 Figure P6.75 R1 = 67.3 kΩ R2 = 12.7 kΩ RC1 = 10 kΩ CC1 CC3 CC2 CE VCC = +12 V RE2 = 1.6 kΩ RL = 250 Ω R3 = 15 kΩ R4 = 45 kΩRE1 = 2 kΩ Q1 vo vs Q2 Ris Ro + – Figure P6.76 *6.76 Consider the circuit shown in Figure P6.76 with transistor parameters β = 120 and VA =∞. (a) Determine the small-signal parameters gm , rpi , and ro for both transistors. (b) Plot the dc and ac load lines for both tran- sistors. (c) Determine the overall small-signal voltage gain Av = vo/vs . (d) Determine the input resistance Ris and the output resistance Ro. (e) De- termine the maximum undistorted swing in the output voltage 6.77 The transistor parameters for the circuit in Figure P6.77 are β1 = 120, β2 = 80, VB E1(on) = VB E2(on) = 0.7 V, and VA1 = VA2 =∞. (a) Deter- mine the quiescent collector current in each transistor. (b) Find the small- signal voltage gain Av = vo/vs . (c) Determine the input and output resis- tances Rib and Ro. nea80644_ch06_369-468.qxd 06/13/2009 07:33 PM Page 466 F506 Hard disk:Desktop Folder:Rakesh:MHDQ134-06: 4/5 .......................................................................... ................................ ........................Họ & tên : MSSV : Lớp : b) Hãy vẽ mạch tương đương ac và tìm giá trị độ lợi điện áp vO / vS. ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... c) Tính Ris và Ro ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... ................................................................................................................................................................................... -----Hết----- 5/5
File đính kèm:
de_kiem_tra_giua_hoc_ky_mon_mach_dien_tu_1.pdf
