1. The schematic diagram of the half-wave rectifier circuit is as follows:
2. The waveforms of the relevant nodes of the half-wave rectifier circuit are as follows:
3. Output average voltage:
4. Output average current:
IO (AV) = Uo / RL ≈ 0.45U2 / RL
5. Diode selection consideration
a) The forward average current of the diode is equal to the average current of the load, ID(AV) = IO(AV)
b) the reverse withstand voltage of the diode,
c) Component derating design, if there are no special requirements, it can generally be designed according to level III derating.