A crystal diode having   internal resistance  rf  is used  for full wave rectifier .  If the  applied voltage is V=V0sinwt  and load resistance is RL , find  iavg    and  irms.

Average  current in full wave rectifier, iavg=∫0T2I0sinωtdtT2      here, T=2πω ⇒ iavg=I0π- cosωt0πω ⇒iavg=2i0πRMS current in full wave rectifier , irms=1T2∫0T2I02sin2ωtdt⇒ irms=I02Tt-2sinωtω0T2               here, T=2πω ⇒ irms=i02