Difference Between Thevenin and Norton

– Norton's theorem uses a current source, whereas Thevenin's theorem uses a voltage source. – Thevenin's theorem uses a resistor in series, while Norton's theorem uses a resister set in parallel with the source. – Norton's theorem is actually a derivation of the Thevenin's theorem.

1. What is the relation between Norton and Thevenin's equivalent?
2. What is the main advantage of Thevenin and Norton equivalent circuits?
3. What is the use of Thevenin's theorem?
4. What is VTH in Thevenin's theorem?
5. Why do we use Norton Theorem?
6. What are the limitations of Thevenin's theorem?
7. What are the limitations of Norton's Theorem?
8. How do you calculate RTh?
9. How do you find Thevenin resistance?
10. How do I get Norton current?

What is the relation between Norton and Thevenin's equivalent?

Thevenin and Norton's resistances are equal. Thevenin voltage is equal to Norton's current times Norton resistance. Norton current is equal to Thevenin voltage divided by Thevenin resistance.

What is the main advantage of Thevenin and Norton equivalent circuits?

Thevenin's theorem offers the following advantages, It reduce complex circuit to a simple circuit viz a single source of emf in series with a single resistance. It greatly simplifies the portion of the circuit of lesser importance and enable us to view the action of output part directly.

What is the use of Thevenin's theorem?

Thevenin's Theorem provides an easy method for analyzing power circuits, which typically has a load that changes value during the analysis process. This theorem provides an efficient way to calculate the voltage and current flowing across a load without having to recalculate your entire circuit over again.

What is VTH in Thevenin's theorem?

Vth is calculated by opening the specified terminal. Using voltage divider, Vth= 2*10/(2+1)=6.67V. On drawing the Thevenin equivalent circuit, we get Rth, 4 ohm and Vth in series.

Why do we use Norton Theorem?

The Norton equivalent circuit is used to represent any network of linear sources and impedances at a given frequency. Norton's theorem and its dual, Thévenin's theorem, are widely used for circuit analysis simplification and to study circuit's initial-condition and steady-state response.

What are the limitations of Thevenin's theorem?

Limitations of Thevinen's Theorem

If the circuit consists of non linear elements, this theorem is not applicable. Also to the unilateral networks it is not applicable. There should not be magnetic coupling between the load and circuit to be replaced with the thevinen's equivalent.

What are the limitations of Norton's Theorem?

Limitations of Norton's Theorem

• This formula is appropriate for the linear modules like resistors.
• It's not for such modules which are not linear like diodes, the transistor.
• It also not operate for such circuitries which has magnetic locking.

How do you calculate RTh?

Calculate RTh = VTh / IN. Alternate method (for circuits that consist only of independent sources and resistors).

How do you find Thevenin resistance?

Thevenin resistance is calculated by 'turning off' all independent current and independent voltage sources and calculating the resistance between the two points. Turning off a voltage source sets the voltage across it to 0, which results in a short (0 Ω) in parallel with the 275 Ω resistor.

How do I get Norton current?

Find the Norton source current by removing the load resistor from the original circuit and calculating the current through a short (wire) jumping across the open connection points where the load resistor used to be.