# Norton and thevenin theorem examples pdf

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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. For alternating current AC systems the theorem can be applied to reactive impedances as well as resistances. The Norton equivalent circuit is used to represent any network of linear sources and impedances at a given frequency. To find the equivalent, the Norton current I no is calculated as the current flowing at the terminals into a short circuit zero resistance between A and B.

## Norton’s Theorem. Easy Step by Step Procedure with Example

Electrical Circuit Analysis and Design pp Cite as. However, it is useful to have a collection of theorems which, for a particular application, encapsulate appropriate laws; this allows us to obtain a speedy solution to these problems. We look at the more important theorems in this chapter. Unable to display preview. Download preview PDF. Skip to main content. This service is more advanced with JavaScript available. ## Norton’s Theorem. Easy Step by Step Procedure with Example

Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. Discussion on the Thevenin's theorem and Norton's theorem Abstract: In the study of Thevenin's theorem and Norton's theorem, the definitions in some books are often not precise enough. According to the examples, the relationship between the Thevenin's theorem and Norton's theorem are given, as wellas the The scope of adaptation. ## Norton's theorem

Objective: To Verify Norton Theorem. A linear active network consisting of independent and or dependent voltage and current sources and linear bilateral network elements can be replaced by an equivalent circuit consisting of current sources in parallel with the resistance, the current source being the short circuited current across the load terminal and resistance being the internal. The various sorts of ferrite materials are available yet ordinary kind of ferrites are nickel-zinc ferrite and manganese-zinc ferrite. Manganese Zinc is having maximal change thickness and its viable repeat broaden is under 5MHz yet banished ordinary mode inductors that impedance is awesome decision up to 70MHz.

It states that any two terminal linear network or circuit can be represented with an equivalent network or circuit, which consists of a current source in parallel with a resistor. A linear circuit may contain independent sources, dependent sources and resistors. The response in an element can be the voltage across that element, current flowing through that element or power dissipated across that element.

Contrasting our original example circuit against the Norton equivalent: it looks something like this:. Remember that a current source is a component whose job is to provide a constant amount of current, outputting as much or as little voltage necessary to maintain that constant current. As before, the first step is to identify the load resistance and remove it from the original circuit:.

### 5.4: Thévenin's and Norton's Theorems

These theorems are related in that they allow complex linear networks to be simplified down to a single source with an associated internal impedance. They simplify analysis when checking a circuit with multiple possible loads. Consequently, these equivalents are generally not appropriate for a circuit using multiple sources with differing frequencies 1. That remainder may be a single component or a large multi-component sub-circuit. That is, The first step is to make the cut, removing the remainder of the circuit. We then determine the open circuit output voltage at the cut points i.

Norton in Back to top. Magnitude of this equivalent current source is equal to the short circuit current flowing through the load terminals and the equivalent resistance is the resistance at the load terminals, when all the sources in a given circuit are replaced by their internal resistances. In below figure a part of a network , constituting of sources either voltage or current or both and resistances is replaced with a current source and a parallel resistor such that current flowing through the load is same in both cases. For an AC circuit it can be stated as , any active two terminal network consisting of independent sources and impedance can be replaced with an equivalent circuit consisting of a constant current source with a parallel impedance. The value of the current source is equal to the current flow through the short circuited terminals of the network. And the parallel impedance is the equivalent impedance viewed from the short circuited terminals when all the sources are replaced with their internal impedance. Problem 5: Find the Thevenin equivalent circuit for the following circuit with respect to the terminals AB (Irwin – Example ). Thevenin's and Norton's Theorems.  