THEVENIN TREOREM

THEVENIN THEOREM

Thevenin's theorem is a procedure by which we change a complex network in to simple network called thevenin's equivalent circuit.

Thevenin’s equivalent circuit of an open circuit voltage, thevenin voltage, V_th and the total resistance from the open terminals side, thevenin's equivalent resistance, R_th. Connected both thevenin's quantities in series. In this way we can find the current or voltage of any branch of the circuit.

STEP#1

Remove that resistance in

which current is wanted

STEP#2

Find the open circuit voltage, V_AB called thevenin's equivalent voltage, V_th.

STEP#3

Find the total resistance, from open terminals A and B side is called thevenin's equivalent resistance, Rth removing actual voltage source from the circuit.

STEP # 4

Connect V_th and Rth in series. This will be the thevenin's equivalent circuit.

STEP#5

Reconnect the R_L between the open terminals of the thevenin's equivalent circuit.

STEP#6

Find the current in R_L

As both resistances are connected in series so the in R_L. and R_th are same.