L14_two_port

L14_two_port - ESC102 : Introduction to Electronics Two...

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Two Port Network ESC102 : Introduction to Electronics A.R. Harish Dept. of EE, IIT Kanpur 23 Aug, 2010
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Two-Port Networks I 2 I 1 + V 1 - + V 2 - Two-Port Network Port: A pair of terminals through which a signal can enter/leave the network Constraints on analysis: 1. Linear elements only (R,L,C, dependent sources,. .) 1. No independent sources or stored energy inside the network I 1 I 2 No matter how complicated is the circuit inside the two-port network, it can be represented by only four elements !
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I 2 I 1 + V 1 - + V 2 - Two-Port Network 1 11 1 12 2 V z I z I = + 2 21 1 22 2 V z I z I = + Z or Impedance Parameters I 1 + V 1 - I 2 Z 11 + - z 12 I 2 + - Z 22 z 21 I 1 + V 2 - 1 1 11 12 21 22 2 2 V I z z z z V I =
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I 2 I 1 + V 1 - + V 2 - Two-Port Network 1 11 1 12 2 I y V y V = + 2 21 1 22 2 I y V y V = + Y or Admittance Parameters + V 1 - + V 2 - I 1 y 12 V 2 y 11 y 22 y 21 V 1 I 2 1 1 11 12 21 22 2 2 I V y y y y I V =
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I 2 I 1 + V 1 - + V 2 - Two-Port Network 1 11 1 12 2 V h I h V = + 2 21 1 22 2 I h I h V = + H or Hybrid Parameters + V 1 - + V 2 - I 2 h 21 I 1 h 22 + - h 11 h 12 V 2 I 1 1 1 11 12 21 22 2 2 V I h h h h I V =
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I 2 I 1 + V 1 - + V 2 - Two-Port Network 1 11 1 12 2 V h I h V = + 2 21 1 22 2 I h I h V = + H or Hybrid Parameters 0 1 2 21 0 1 1 11 2 2 = = = = V V I I h I V h 0 2 2 22 0 2 1 12 1 1 = = = = I I V I h V V h Short-circuit input impedance Short-circuit forward current gain Open-circuit reverse voltage gain Open-circuit output admittance
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I
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L14_two_port - ESC102 : Introduction to Electronics Two...

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