Electricity: Norton and Thevenin Theorem applications

In summary, the conversation is about using Thevenin and Norton models to simplify a circuit. The person is given a table with output voltages and corresponding currents and is asked to draw a V-I diagram and the corresponding models. They are unsure of how to proceed without knowing the initial circuit, but the point of these models is that the details of the circuit are not needed. The resistance and source value can be determined from the table.
  • #1
kthouz
193
0
i've got a problem about the thevenin and Nortn models applications.
i've been given a table giving 3 outpout voltages(v1= 200v,v2= 150V,v3 = 100v) from the voltage sources with their corresponding current(I1= 0A,I2= 12A,I3=22A).
The question was to draw a V-I diagram and draw the corresponding Thevenin and Norton models, so how do i have to proceed without knowing the initial circuit so that i can see which resistances am going to short/open .

This is how i did:
as we see from that table ther resistance changes, think that it changes with some restinces that have been shorted but i can't figure it out clearly. So please help me!
 
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  • #2
The point of these simplified circuit models is that you don't need to know the details of a passive network, you can just substitute the Thevenin or Norton circuit. Then your table will define the two elements, the resistance (which causes the voltage to decrease with increasing load current) and the source value, voltage or current depending on which version. The source value is found most easily with the no load current datum.
 

FAQ: Electricity: Norton and Thevenin Theorem applications

What are the Norton and Thevenin Theorems?

The Norton and Thevenin Theorems are two important concepts in electrical engineering that are used to simplify complex circuits and to analyze their behavior. They are useful for determining the equivalent resistance and voltage of a circuit, making it easier to solve problems and design circuits.

How do the Norton and Thevenin Theorems differ from each other?

The main difference between the Norton and Thevenin Theorems is the way they represent a complex circuit. The Norton Theorem uses a current source in parallel with an equivalent resistance, while the Thevenin Theorem uses a voltage source in series with an equivalent resistance. They both result in the same simplified circuit, but the type of source used is different.

What are the applications of the Norton and Thevenin Theorems?

The Norton and Thevenin Theorems have many practical applications in electrical engineering. They are used to analyze and design circuits, to calculate the maximum power that can be delivered by a circuit, and to determine the parameters of a circuit for optimization and troubleshooting.

Can the Norton and Thevenin Theorems be applied to any circuit?

While the Norton and Thevenin Theorems are powerful tools, they can only be applied to linear circuits that contain independent sources. Nonlinear circuits or circuits with dependent sources cannot be simplified using these theorems.

What are some limitations of the Norton and Thevenin Theorems?

The Norton and Thevenin Theorems have some limitations. They can only be applied to circuits in steady-state conditions, and they assume that the internal resistance of a circuit is negligible. In addition, the theorems may not provide accurate results for circuits with high-frequency components or complex impedance networks.

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