# Nortons equivalent circuit

## Norton’s theorem

Known in Europe as the Mayer–Norton theorem, Norton’s theorem holds, to illustrate in DC circuit theory terms, that: Any linear electrical network with voltage and current sources and only resistances can be replaced at terminals A-B by an equivalent current source INO in parallel connecti…

is a dual network of the Thevenin equivalent circuit. Norton and Thevenin theorem widely used to solve complex circuits in network analysis. As we have seen, the Norton equivalent circuit consists of a Norton current source and Thevenin equivalent circuit consists of a Thevenin voltage source.

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 is the difference between Thevenin and Norton equivalent circuit?

Norton equivalent circuit is a dual network of the Thevenin equivalent circuit. Norton and Thevenin theorem widely used to solve complex circuits in network analysis. As we have seen, the Norton equivalent circuit consists of a Norton current source and Thevenin equivalent circuit consists of a Thevenin voltage source.

## How do you draw a Norton equivalent circuit?

Draw the Norton equivalent circuit, with the Norton current source in parallel with the Norton resistance. The load resistor re-attaches between the two open points of the equivalent circuit. Analyze voltage and current for the load resistor following the rules for parallel circuits.

## What is the Norton source current in the equivalent circuit?

The total current through the short between the load connection points is the sum of these two currents: 7 amps + 7 amps = 14 amps. This figure of 14 amps becomes the Norton source current (I Norton) in our equivalent circuit:

## What is Norton’s theorem in circuit theory?

In direct-current circuit theory, Norton’s theorem, also called the Mayer–Norton theorem, is a simplification that can be applied to networks made of linear time-invariant resistances, voltage sources, and current sources. At a pair of terminals of the network, it can be replaced by a current source and a single resistor in parallel.

## What are Thévenin and Norton equivalent circuits?

hévenin’s and Norton’s equivalent are circuit simplification techniques that focus on terminal behavior. This Theorem says that any circuit with a voltage source and a network of resistors can be transformed into one voltage source and one resistor.

## What is Norton’s theorem formula?

Any collection of batteries and resistances with two terminals is electrically equivalent to an ideal current source i in parallel with a single resistor r. The value of r is the same as that in the Thevenin equivalent and the current i can be found by dividing the open circuit voltage by r.

## What are the two components of Norton equivalent circuit?

Solution: This circuit can be viewed as containing two Thévenin circuits: a 5-volt source and 10-Ω resistor, and a 10-volt source and 40-Ω resistor. After converting these two Thévenin circuits to equivalent Norton circuits using Equations 11.19 and 11.20, we apply standard nodal analysis.

## How do I find my Norton circuit?

8:2211:05Norton’s Theorem and Thevenin’s Theorem – Electrical Circuit AnalysisYouTubeStart of suggested clipEnd of suggested clipAnd to calculate the current flowing through rl is going to be the norton. Current times rn over rnMoreAnd to calculate the current flowing through rl is going to be the norton. Current times rn over rn plus rl.

## What is Norton principle?

Nortons Theorem states that “Any linear circuit containing several energy sources and resistances can be replaced by a single Constant Current generator in parallel with a Single Resistor“.

## What is Norton’s theorem explain?

What is Norton’s Theorem? Norton’s Theorem states that it is possible to simplify any linear circuit, no matter how complex, to an equivalent circuit with just a single current source and parallel resistance connected to a load.

## What are the applications of Norton’s Theorem?

Applications of Norton’s Theorem It is used to reduce a complex circuit into a simple circuit. Norton’s theorem is useful to solve problems on parallel generators with unequal emf’s and unequal impedances. Norton’s theorem can be interchangeably used with thevenin’s theorem through proper source transformations.

## What are the advantages of Norton’s Theorem?

Norton’s Theorem states that it is possible to simplify any linear circuit, no matter how complex, to an equivalent circuit with just a single current source and parallel resistance connected to a load.

## What is Norton’s resistance?

What is Norton’s Theorem? Norton’s Theorem states that it is possible to simplify any linear circuit, no matter how complex, to an equivalent circuit with just a single current source and parallel resistance connected to a load.

## How do you calculate RTH and VTH?

1:5112:19Thevenin’s circuit, finding Vth and Rth network theory – GATE and IESYouTubeStart of suggested clipEnd of suggested clipYou have the function relating il with the I th and RL + v th. So you don’t have to worry about theMoreYou have the function relating il with the I th and RL + v th. So you don’t have to worry about the changed value of RL. You just have to put the new value and you will get the new value of IL. If.

## What is Thevenin’s theorem formula?

Any combination of batteries and resistances with two terminals can be replaced by a single voltage source e and a single series resistor r. The value of e is the open circuit voltage at the terminals, and the value of r is e divided by the current with the terminals short circuited.

## Why we use Norton’s 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 is superposition theorem formula?

The total current in any part of a linear circuit equals the algebraic sum of the currents produced by each source separately.

## How do I prove Norton Theorem?

Short the load terminals and find the short circuited current(Isc). Next, compute the resistance (Rint) of the network as seen from the load terminals, Replace the 220 V source by a short by closing s1 to “bb”. Apply V=110 V at the output terminals by closing s2 to “dd”.

## What is Norton’s Theorem?

Norton’s Theorem: Norton’s Theorem is a very popular method for solving complex circuits, as well as Thevenin’s Theorem. We have already discussed the Thevenin’s Theorem in detail. Today we will discuss in detail the Norton Theorem.

## Who discovered the Thevenin Theorem?

Edward Laurie Norton While researching the Thevenin Theorem, Bell Lab found that a complex circuit could also be expressed through current sources and parallel resistances. After several tests, he finally 1926 About four years after the discovery of Thevenin’s Theorem, that is, he published his Theorem. But sadly that year, Thevenin Theorem’s …

## How to calculate Norton resistance?

To calculate the Norton resistance (R Norton ), we do the exact same thing as we did for calculating Thevenin resistance (R Thevenin ): take the original circuit (with the load resistor still removed), remove the power sources (in the same style as we did with the Superposition Theorem: voltage sources replaced with wires and current sources replaced with breaks), and figure total resistance from one load connection point to the other:

## How to find Norton source 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.

## What is Norton’s Theorem?

Norton’s Theorem states that it is possible to simplify any linear circuit, no matter how complex, to an equivalent circuit with just a single current source and parallel resistance connected to a load. Just as with Thevenin’s Theorem, the qualification of “linear” is identical to that found in the Superposition Theorem: all underlying equations must be linear (no exponents or roots).

## How to find Norton’s equivalent of circuit A?

To obtain Norton’s equivalent of some circuit A, determine the short-circuit current isc by placing a short circuit between nodes a and b and then calculate the resulting current (directed from the terminal a to b through the short circuit).

## How to get Norton’s equivalent resistance?

1. To obtain the resistance RN– called Norton’s equivalent resistance of circuit A: I. Remove circuit B from circuit A. II. Set all independent sources in circuit A to zero. (A zero voltage source is equivalent to a short circuit, and zero current source is equivalent to an open circuit). III.

## What is circuit B?

Circuit B (which is often called a load) may consist of many circuit elements, a single element ( a load resistor), or no element.

## What are the elements of an arbitrary circuit?

Suppose we are given an arbitrary circuit containing any or all of the following elements: resistors, voltage sources , current sources (the source can be dependent as well as independent). Let us identify a pair of nodes, say node a and b, such that the circuit can be partitioned into two parts as shown in figure 1.

## What is the difference between a parallel and a two terminal network?

The current source output is the short-circuit current at the terminals of a network, whereas the parallel resistance is the resistance between the terminals of a network when all the sources are set to zero.

## When to use Norton impedance?

This voltage divided by the 1 A current is the Norton impedance Rno. This method must be used if the circuit contains dependent sources, but it can be used in all cases even when there are no dependent sources.

## What is Norton’s theorem?

In direct-current circuit theory, Norton’s theorem (aka Mayer–Norton theorem) is a simplification that can be applied to networks made of linear time-invariant resistances, voltage sources, and current sources. At a pair of terminals of the network, it can be replaced by a current source and a single resistor in parallel.

## Who discovered Norton’s theorem?

Norton’s theorem was independently derived in 1926 by Siemens & Halske researcher Hans Ferdinand Mayer (1895–1980) and Bell Labs engineer Edward Lawry Norton (1898–1983). To find the equivalent, the Norton current Ino is calculated as the current flowing at the terminals into a short circuit (zero resistance between A and B ).

## Can AC theorems be applied to reactive impedances?

For alternating current (AC) systems the theorem can be applied to reactive impedances as well as resistances.

## Can a black box be replaced with a current source?

Any black box containing resist ances only and voltage and current sources can be replaced by an equivalent circuit consisting of an equivalent current source in parallel connection with an equivalent resistance.