This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
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...
View
Full
Document
This document was uploaded on 03/08/2012.
 Spring '06
 Amplifier

Click to edit the document details