^Full wave rectifier

^Full wave rectifier

If during the positive half cycle of the input the end A becomes positive and the end B becomes negative with respect to the center tap C then diode D₁ gets towards biased and conducts current D₂ is reverse biased and does not conduct. During the negative half cycle the diode D₁ gets reverse biased and does not conduct & D₂ conducts current. As during both half cycles of input ac the current through load R_L flows in the same direction F to C.