Thevenin Equivalent with a dependent source

In summary, to find the Thevenin Equivalent circuit between A and B, you would replace all the resistances between A and B with one equivalent resistor and reduce the voltage sources to one source. If there is a dependent source, you can find the voltage across it by using KCL and KVL or node analysis.
  • #1
RedDead
8
0
Find the Thevenin Equivalent circuit between A and B
the circuit is in the attachments...

i don't know how to start and don't know what it meas "Between A and B"
and i never encountered a problem with a dependent source.

Thanks...
 

Attachments

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  • #2
Thevenin circuit is a resistor and voltage source in series.

To reduce the circuit to a thevenin equivalent circuit you would replace all the resistances between a and b with one equivalent resistor and reduce the voltage sources to one source.

think of two parallel resistors being represented as one resistor it's similar to this except you have a bunch of resistors and a dependent source as well.

as for the dependent source you shouldn't panic. if you can find the voltage vx then you know the voltage across the dependent source is just 5vx.
 
  • #3
anthonuc said:
Thevenin circuit is a resistor and voltage source in series.

To reduce the circuit to a thevenin equivalent circuit you would replace all the resistances between a and b with one equivalent resistor and reduce the voltage sources to one source.

think of two parallel resistors being represented as one resistor it's similar to this except you have a bunch of resistors and a dependent source as well.

as for the dependent source you shouldn't panic. if you can find the voltage vx then you know the voltage across the dependent source is just 5vx.
right, but how can i find Vx?
 
  • #4
hopefully you know how to use kcl and kvl if not node analysis.
 
  • #5
thanks
 
Last edited:
  • #6
no problem.
 

FAQ: Thevenin Equivalent with a dependent source

What is Thevenin Equivalent with a dependent source?

Thevenin Equivalent with a dependent source is a method used in circuit analysis to simplify a complex circuit into a single equivalent circuit. It involves replacing the original circuit with a voltage source in series with a resistor, where the value of the voltage source is dependent on the current or voltage in the original circuit.

When is Thevenin Equivalent with a dependent source used?

Thevenin Equivalent with a dependent source is commonly used when analyzing circuits that contain dependent sources such as transistors or operational amplifiers. It allows for easier calculation and understanding of the circuit's behavior.

How is Thevenin Equivalent with a dependent source calculated?

To calculate the Thevenin Equivalent with a dependent source, the first step is to identify the dependent source in the original circuit and determine the equation that relates its output to its input. This equation is then used to find the equivalent voltage source value. The equivalent resistance can be found by removing all independent sources from the original circuit and calculating the resistance between the two terminals where the dependent source is connected.

What is the significance of Thevenin Equivalent with a dependent source?

Thevenin Equivalent with a dependent source is significant because it allows for the analysis of complex circuits without having to solve multiple equations. It simplifies the circuit and makes it easier to understand and design. It is also useful in circuit design and troubleshooting.

Can Thevenin Equivalent with a dependent source be used in AC circuits?

Yes, Thevenin Equivalent with a dependent source can be used in both DC and AC circuits. However, the dependent source's equation may differ in AC circuits, as it is dependent on frequency and impedance instead of only voltage or current.

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