# FULL WAVE BRIDGE RECTIFIER

As shown in the given diagram of full wave bridge rectifier it consists of four diodes under the condition in which four diodes are connected the called bridge circuit. So due to this type of circuit is named bridge rectifier. A resistor is connected in the circuit whiere rectified output voltage appears called load resistor R_{L}

## Working of Bridge Rectifier

During the positive input half cycle terminal M of the secondary is positive and N is negative. Diode D_{1} and D_{3} becomes forward bias where as D_{2} and D_{4} are reversed bias. Hence the current flows along point M, E, A, B, C, F and N producing a drop across R_{L}.

During the negative input half cycle secondary terminal N becomes positive and M is negative. Now D_{2} and D_{4} are forward bias and D_{1} and D_{3} are reversed bias. Now the current flows along points N, E, A, B, C, F and M. Hence we find that current keeps flowing through load resistance R_{L} in the same direction (A, B). during both half cycles of the AC input the point A of the bridge rectifier always acts as an anode and point C as cathod. It frequency is twice that of supply frequency.