ELECTRICAL STUDY MATERIAL | THEVENIN’S THEOREM | Indian Shout

You are here: » ELECTRICAL STUDY MATERIAL | THEVENIN’S THEOREM

ELECTRICAL STUDY MATERIAL | THEVENIN’S THEOREM


THEOREMS | THEVENIN’S THEOREMS | THEVENIN’S THEOREM TUTORIAL | THEVENIN’S THEOREM NOTES | THEVENIN’S THEOREM STUDY MATERIAL | THEVENIN’S THEOREM MATERIAL | THEVENIN’S THEOREM PREPARATION MATERIAL|NETWORK THEOREMS


THEVENIN’S THEOREM

This theorem is extensively used in networks when it is desired to determine the current through any element, or voltage across any element, without rigorous calculations required for solving a set of network equations.

Thevenin’s theorem states that any linear active bilateral network can be replaced by an equivalent circuit consisting of a voltage source in series with a resistance.

The voltage source is the open-circuit voltage across the open-circuited load terminals and the resistance being the internal resistance of the source network looking from the open-circuited load terminals.

Let us consider a simple circuit shown in Figure. (a) for the explanation of the Thevenin’s theorem to find the current through rL.

  • Let us first remove the element rL from the circuit shown in Figure. (a). The circuit configuration then becomes as shown in Figure. (b). Now let us apply the following procedure:

THEVENIN THEOREM1

Figures: Application of thevenin’s theorem

  • Here Voc is the voltage across resistance r2 since there is no current through r3. The current through r2 is given by   [from figure (b)]

THEVENIN THEOREM 2

VTh is the Thevenin’s voltage.

  • Next we will find the Thevenin’s resistance RTh . To find it , the voltage source is de-activated by a short circuit as the source does not have any internal resistance. The circuit shown in figure (c).

THEVENIN THEOREM 3

Figure (c): The thevenin’s resistance RTh

Thus,

THEVENIN THEOREM 4

  • Next we will reconnect the load resistance rL across the terminals A-B. The circuit is shown in figure (d).

THEVENIN THEOREM 5

Figure (d): The thevenin equivalent circuit

Therefore the current I through rL is given by

THEVENIN THEOREM 6


THEOREMS | THEVENIN’S THEOREMS | THEVENIN’S THEOREM TUTORIAL | THEVENIN’S THEOREM NOTES | THEVENIN’S THEOREM STUDY MATERIAL | THEVENIN’S THEOREM MATERIAL | THEVENIN’S THEOREM PREPARATION MATERIAL|NETWORK THEOREMS

Similar Posts:

 
 
Posted by 1 Response

Categories:PREPARATION MATERIALS;Tags: , , , , , , , , , , , ,

Free Email Newsletter

Stay Updates with this Blog. Get Free email newsletter updates..

And then confirm your email subcription

   

One Comment to “ELECTRICAL STUDY MATERIAL | THEVENIN’S THEOREM”

  1. reeshma says:

    it is a very nice jb i like it very much

Leave your comment here:

 
Sponsored links
Free Email Updates
Get All Latest Updates in Ur e-mail Inbox..

And then confirm your email subcription

Sponsored Links