hw9_solns

# hw9_solns - NC State University Department of Electrical...

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Unformatted text preview: NC State University Department of Electrical and Computer Engineering Problem Set 9 Solutions ECE-302 Spring 2005 Due: Monday, April 11 th in class H&S Chap. 8 E8.1) i out L L out v R R R v 10 ⋅ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + = , s S in in i v R R R v ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + = s S in in out L L out v R R R R R R v 10 ⋅ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + = ⇒ V V k k k R R R R R R v v S in in out L L s out 5 . 2 100 100 100 10 10 10 10 10 = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + = ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + = (a) ANS s S in in L out L out i out v R R R R R R R v i ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + − = + − = 10 10 Remember that out i is defined as the small signal current entering the port, and thus the minus sign is needed above. S k k R R R R R v i S in in L out s out µ 250 100 100 100 10 10 10 10 − = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + − = ⎟...
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hw9_solns - NC State University Department of Electrical...

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