FULL WAVE RECTIFIER WORKING WITH CIRCUIT DIAGRAM

FULL WAVE RECTIFIER

Introduction - Full wave rectifier is used to make smooth ripple free power supply. It requires a centre tapped transformer of required voltage and current rating. for example 230 volt/12-0-12 volt 2 ampere for 12 volt 2 ampere dc power supply. Two diodes of 2 Amp. rating with 500/1000 volt PIV value. Peak inverse voltage must be more than twice the required output voltage. Two numbers filter condenser of 2000 mfd 25 volt rating. one 2 ohms 5 watt resistance and one 1000 ohms 1 watt resistance. The above value may be changed as per need.
All the components are joined as per circuit diagram

Description :- The function of transformer is to step down 230 volts to 12- 0- 12 volt. 12-0-12 volt means transformer output winding has three points. Centre point is commen and other two points are 12 volt points 180 degree out of phase. When 230 volt supply is given to primary winding 12 volt ac induced in the secondary winding. The  centre point of transformer becomes the negative point of dc supply.Two diodes d1 and d2 conduct positive half of each ac cycle alternatively. Condenser C1 and C2 act as filter capacitor for smoothening dc supply. resistance R1 act as series filter resistance and R2 act as bleeder resistance.