- #1

- 360

- 0

I am especially unsure about my second equation because of the dependent voltage source to the left of the node.

1) I

_{1}= (V

_{1}- 3I

_{2})/1

2) 0 = V

_{3}/2 + (V

_{3}-V

_{2})/2

3) I

_{2}= (V

_{2}-V

_{3})/2 + 2V

_{3}

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- Thread starter magnifik
- Start date

- #1

- 360

- 0

I am especially unsure about my second equation because of the dependent voltage source to the left of the node.

1) I

2) 0 = V

3) I

- #2

NascentOxygen

Staff Emeritus

Science Advisor

- 9,244

- 1,072

(1) and (2) are wrong.

N.B., current flows though__every__ element in the circuit.

N.B., current flows though

- #3

- 360

- 0

(1) and (2) are wrong.

N.B., current flows thougheveryelement in the circuit.

the dependent sources are throwing me off. are the equations at least partially correct?

- #4

gneill

Mentor

- 20,925

- 2,866

the dependent sources are throwing me off. are the equations at least partially correct?

Your third equation is okay. The first equation is ignoring the fact that the controlled voltage source 3I

What is it you are expected to solve for? Is it the three voltages in terms of currents I1 and I2?

You might find it beneficial to write an equation in terms of the supernode (as indicated by the line breaks):

- #5

- 360

- 0

Your third equation is okay. The first equation is ignoring the fact that the controlled voltage source 3I_{2}is connected to V3, not ground. The second equation is ignoring any current that may be flowing into the V3 node via the 3I_{2}source.

What is it you are expected to solve for? Is it the three voltages in terms of currents I1 and I2?

ultimately, i will be solving for y-param. i was able to do so using mesh analysis instead, but i was hoping to try and obtain the nodal equations to double check my answers.

- #6

The Electrician

Gold Member

- 1,283

- 169

ultimately, i will be solving for y-param. i was able to do so using mesh analysis instead, but i was hoping to try and obtain the nodal equations to double check my answers.

Are you wanting the Y parameters only for the two-port? That is, just for V1-I1 as the input and V2-I2 as the output, in effect reducing the whole circuit to just a two-port?

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