midterm2-2010-solutions

midterm2-2010-solutions - Name: Student No: ELE 210...

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Unformatted text preview: Name: Student No: ELE 210 ELECTRONICS I EXAM II (25%) SOLUTIONS Q1 Q2 Q3 TOTAL 35 30 35 100 May 12 ℎ , 2010 Answer all three questions. Explain your assumptions. Good Luck! Q1. Consider the BJT circuit below. a) Calculate the voltage gain, = / , and current gain, = / . b) Find the input resistance, . c) Determine the maximum undistorted symmetrical output voltage swing. = 0 . 7 = 200 SOLUTION: a) = 1 1 + 2 = 1 . 18 V (1.1) = 1 ∣∣ 2 = 4 . 7 kΩ (1.2) = − ℎ +1 + = 2 . 13 mA (1.3) ℎ = = 26 2 . 13 = 12 . 2 Ω (1.4) = ∣∣ ℎ = 2 . 5 12 . 2 = 205 (1.5) = + + ℎ = 0 . 47 (1.6) b) = ∣∣ ℎ = 11 . 5 Ω (1.7) c) = + = 5 . 2 kΩ (1.8) = ∣∣ + = 2 . 7 kΩ (1.9) = 2 . 13 mA (1.10) = −...
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This note was uploaded on 05/24/2011 for the course EE 210 taught by Professor Umutsezen during the Spring '11 term at Hacettepe Üniversitesi.

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midterm2-2010-solutions - Name: Student No: ELE 210...

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