Midterm 2 November 2004

Midterm 2 November 2004 - Midterm Examination Intro to...

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Midterm Examination Intro to Electronics - ECSE-330A November 11 th 2004, 10:05 AM – 11:25 AM Professor David Plant Pertinent Information: 1) This is a closed-book examination, no notes permitted. 2) The examination consists of 4 problems and 41 total possible points. 3) Only the Faculty Standard Calculator is permitted. 4) This paper will NOT be collected. Write all answers in the answer booklet only.
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Consider the following circuit. All BJTs are working in active mode and have the same β . Any capacitors have infinite capacitance. You must decide whether or not to include the Early Effect for each BJT according to the rules established in class. a) (3 pts) Draw a complete small-signal model for this circuit. b) (4 pts) Find an expression for R in , R inA , R inB and R out in terms of the small-signal parameters of each BJT. c) (3 pts) Find an expression for the voltage gains v x /v s , v y /v x and v out /v y in terms of the small-signal parameters of each BJT. 2
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Midterm 2 November 2004 - Midterm Examination Intro to...

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