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ECE102_W04_Final - ECE102 Student ID Final Name(Last First...

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ECE102 Final Winter 2004 1 Student ID Name (Last, First) Score Question 1 (4 points): Name the operating mode of the transistor for cases (a) through (d). I D is the MOS drain current and I C is the BJT collector current. Question 2 (2 + 3 + 2 points): (a) Below, you see the locations on the s-plane of the poles ( x ) and zeros ( o ) of a filter. The DC gain is equal to 1. What is the transfer function G(s) of this filter (use only real coefficients)? (b) Draw the bode plot of the magnitude for the following transfer function: 2 2 ) 10 ( 100 ) ( s s s H + = (c) What is the exact magnitude of H(s) at ω = 10 rad/s? Express your answer both in dB and in a linear scale. 54 Clearly mark your answers. You may loose credit if you don’t. We will not go hunting for your answers. V DS I D V GS V BE V CE I C (a) (b) (c) (d) o o x Re Im j -j -1
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ECE102 Final Winter 2004 2 Question 3 (1 + 1 + 1 + 1 points): (a) Shown below is a pn-junction, where the shaded part is the space charge region. Redraw this figure and indicate the polarity (+ or -) of the fixed charges in the n and the p part of this space charge region.
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