Circuits

Power Supplies (1)

  • Conversion of a.c. to d.c. — rectification
  • Diodes convert a.c. into uni-directional a.c., needs smoothing
  • (a) Half wave:  D1 conducts on positive half cycles
  • (b) Full wave:  On + half cycle top of transformer is + so D1 conducts, on half cycle bottom is + so D2 conducts