Thevenin & Norton Circuit with Current source?

Engineering
Thread starter Marcin H
Start date Sep 10, 2016
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Circuit Current Current source Source Thevenin

In summary, the conversation discusses finding the Voc in a circuit with a Thevenin/Norton equivalent and a 3ix current source. The conversation also explores using KVL and KCL to solve for the potential at the central node, which is determined to be 0 when ix is also 0. The potential difference across the 2 ohm resistor is also found to be 0 when ix is 0, resulting in 0 current through the dependent source.

Sep 10, 2016

gneill

Mentor

Right.

<h2>1. What is Thevenin's theorem?</h2><p>Thevenin's theorem is a principle in circuit analysis that states that any linear, active network containing voltage and current sources can be replaced by an equivalent circuit consisting of a single voltage source in series with a single resistor.</p><h2>2. What is Norton's theorem?</h2><p>Norton's theorem is a principle in circuit analysis that states that any linear, active network containing voltage and current sources can be replaced by an equivalent circuit consisting of a single current source in parallel with a single resistor.</p><h2>3. What is the difference between Thevenin and Norton equivalent circuits?</h2><p>The main difference between Thevenin and Norton equivalent circuits is the type of equivalent source used. Thevenin equivalent circuits use a voltage source, while Norton equivalent circuits use a current source. Additionally, the equivalent resistance in a Thevenin circuit is in series with the source, while in a Norton circuit, it is in parallel with the source.</p><h2>4. How do you calculate the Thevenin equivalent resistance?</h2><p>The Thevenin equivalent resistance is calculated by removing the load resistor from the original circuit and finding the equivalent resistance between the open terminals. This can be done using Ohm's law, by calculating the total resistance of the circuit or by using the voltage and current sources in the circuit.</p><h2>5. Can Thevenin and Norton equivalent circuits be used for non-linear circuits?</h2><p>No, Thevenin and Norton equivalent circuits can only be used for linear circuits. Non-linear circuits, which include components such as diodes and transistors, do not follow Ohm's law and therefore cannot be reduced to a single equivalent source and resistor.</p>

1. What is Thevenin's theorem?

Thevenin's theorem is a principle in circuit analysis that states that any linear, active network containing voltage and current sources can be replaced by an equivalent circuit consisting of a single voltage source in series with a single resistor.

2. What is Norton's theorem?

Norton's theorem is a principle in circuit analysis that states that any linear, active network containing voltage and current sources can be replaced by an equivalent circuit consisting of a single current source in parallel with a single resistor.

3. What is the difference between Thevenin and Norton equivalent circuits?

The main difference between Thevenin and Norton equivalent circuits is the type of equivalent source used. Thevenin equivalent circuits use a voltage source, while Norton equivalent circuits use a current source. Additionally, the equivalent resistance in a Thevenin circuit is in series with the source, while in a Norton circuit, it is in parallel with the source.

4. How do you calculate the Thevenin equivalent resistance?

The Thevenin equivalent resistance is calculated by removing the load resistor from the original circuit and finding the equivalent resistance between the open terminals. This can be done using Ohm's law, by calculating the total resistance of the circuit or by using the voltage and current sources in the circuit.

5. Can Thevenin and Norton equivalent circuits be used for non-linear circuits?

No, Thevenin and Norton equivalent circuits can only be used for linear circuits. Non-linear circuits, which include components such as diodes and transistors, do not follow Ohm's law and therefore cannot be reduced to a single equivalent source and resistor.