C1-3: Equivalent of the Linear Network with Two Terminals (One-port Network Tea break/ Example 20 =0.375A 19 果是个12 白 C1-3: Equivalent of the Linear Network with Two Terminals C1-3: Equivalent of the Linear Network with Two Terminals 4.The transfer of source( Equivalent of network with more terminals): 4.The transfer of source(Equivalent of network with more terminals) The transfer of current source. Example: the benefits of the transfer of source V32=,-12R2 The same port characteristic V12=1R1-l2R2 C1-3: Equivalent of the Linear Network with Two Terminals C1-3: Equivalent of the Linear Network with Two Terminals 5. Equivalent of the one-port network with controlled source 1 )Equivalent to source: When the controlling parameters is outside the network which is equivalent, the controlled source has a active ①2A characteristic, which can be deal with like an independent source quivalent to source: When the controlling paran V=V, +41,-2al inside the network which is equivalent, we can only write down the equations using KCL or KVL, and acquire the I-V relationship (1)let,=10a=1/2V=10+3l1 the port. V=10+3(2+1) 2A北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 Example : + - - + 1Ω 1Ω 2Ω 2Ω 1V 2Ω 1V I=？ + - - + 1Ω 2Ω 0.5V 2Ω 1V I=？ + - 1Ω 1Ω 2Ω 0.5A 2Ω 1V I=？ 2Ω 2Ω 1Ω I=？ 0.25A 2Ω 0.5A 1Ω 1Ω I=0.375A 0.75A C1-3：Equivalent of the Linear Network with Two Terminals (One-port Network) 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 Tea break！ Tea break！ 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 4.The transfer of source (Equivalent of network with more terminals)： R1 + - I2 R2 I1 I3= I1+ I V 2 s 12 1 1 2 2 31 1 1 32 2 2 V I R I R V V I R V V I R s s = − = − = − 3 2 1 + - I2 R2 I1 + - R1 Vs Vs I3 3 2 1 The same port characteristic (the same I-V equations) C1-3：Equivalent of the Linear Network with Two Terminals (One-port Network) 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 The transfer of current source: R1 R2 R1 R2 Example: the benefits of the transfer of source + - - + + - C1-3：Equivalent of the Linear Network with Two Terminals (One-port Network) 4.The transfer of source (Equivalent of network with more terminals)： 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 5. Equivalent of the one-port network with controlled source: 1)Equivalent to source: When the controlling parameters is outside the network which is equivalent, the controlled source has a active characteristic, which can be deal with like an independent source. 2)Not equivalent to source: When the controlling parameters is inside the network which is equivalent, we can only write down the equations using KCL or KVL, and acquire the I-V relationship of the port. C1-3：Equivalent of the Linear Network with Two Terminals (One-port Network) 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 北京大学 wwhu 北京大学 wwhu 北京大学 wwhu 北京大学 Example: 4Ω 1I + - s 2A V 1 2αI + - + - 2Ω 2Ω 2A 1 αI Vs 1I 1 1 V V 4I 2 I = s + − α (1) let Vs =10 α =1/ 2 1 V =10 + 3I + - V I + - V I + - 2A 3Ω 10V I1 + - V I 3Ω + - 16V + - V I V=10+3(2+I) =16+3I C1-3：Equivalent of the Linear Network with Two Terminals (One-port Network)