- #1
What is the Thevenin equivalent circuit for a circuit with a current source?
- Engineering
- Thread starter maysusandy
- Start date
In summary, the person has some experience solving Thevenin circuits with voltage sources, but not with current sources. They are seeking ideas for solving the problem and suggest using nodal analysis. They mention that finding the voltage across the terminals is important and provide an equation for calculating it. They also mention that it may require some creative grouping of terms.
- #2
sandy.bridge
- 798
- 1
You will want to find the voltage across the terminals, which would merely be the voltage across the [tex]5I_x[/tex] element.
- #3
gneill
Mentor
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maysusandy said:
Nodal analysis looks promising.
If you slap a load impedance ZL onto the output and can wrestle the output node voltage expression into the form:
[tex] Vo = V_{th} \frac{Z_L}{Z_L + Z_{th}} [/tex]
then you're golden. It may take some creative grouping of terms to isolate the Vth and Zth bits
Related to What is the Thevenin equivalent circuit for a circuit with a current source?
What is a Thevenin equivalent circuit?
A Thevenin equivalent circuit is a simplified representation of a complex electrical network, consisting of a single voltage source and a single resistance. It is used to analyze the behavior of a circuit and make calculations without having to consider the details of the entire network.
How is a Thevenin equivalent circuit calculated?
To calculate a Thevenin equivalent circuit, the original circuit is disconnected from its load, and the equivalent resistance is calculated by shorting all voltage sources and opening all current sources. The open-circuit voltage is then measured between the two terminals, and this voltage and equivalent resistance are used to create the Thevenin equivalent circuit.
What is the purpose of a Thevenin equivalent circuit?
The purpose of a Thevenin equivalent circuit is to simplify complex electrical networks and make calculations easier. It is often used in circuit analysis and design, as well as in troubleshooting and testing circuits.
What are some limitations of a Thevenin equivalent circuit?
A Thevenin equivalent circuit is only accurate for linear circuits, meaning that the relationship between voltage and current must be constant. It also assumes that the network is unchanging and that there are no time-varying elements present.
How is a Thevenin equivalent circuit different from a Norton equivalent circuit?
A Thevenin equivalent circuit is based on voltage sources, while a Norton equivalent circuit is based on current sources. Additionally, a Thevenin equivalent circuit has a voltage source in series with a resistance, while a Norton equivalent circuit has a current source in parallel with a resistance.
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