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Unformatted text preview: Z in = h 11 . Given V 1 V s = 25 26 , V 1 V s = Z in Z in + R s = 25 26 = h 11 h 11 + R s ⇒ h 11 = 2k Ω 2/ 3 Purdue University, School of Electrical and Computer Engineering Prof. DeCarlo (d) Z in From part c) we found that Z in = h 11 = 2k Ω . (e) h 21 When port 2 is connected to the load Z in 2 , then the I 2 in (eq.77.2) becomesV 2 Y in 2 . Then it simpliﬁes to: I 2 = h 21 I 1 + h 22 V 2V 2 Y in 2 = h 21 I 1 + h 22 V 2 ⇒ h 21 =V 2 ( h 22 + Y in 2 ) I 1 =± V 1 I 1 ²± V 2 V 1 ² ( h 22 + Y in 2 ) =( Z in )(100 )( 1 1600 + 1 1600 ) = 250 (f) Ratio of Power delivered to the load to the power delivered to R L P load = ( V 2 ) 2 Z in 2 P R L = ( V L ) 2 R L = ( V 2 / a ) 2 R L ∴ P load P R L = ( V 2 ) 2 Z in 2 a 2 R L ( V 2 ) 2 = ( 400 )( 4 ) 1600 = 1 3/ 3...
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 Spring '06
 Electrical Engineering, Amplifier, Purdue University, Voltage source, School of Electrical and Computer Engineering, Prof. Decarlo, V1 VS Zin

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