DC output level is higher

The ripple frequency is higher

The need of bulky transformer

Each diode carries half the load current

Doping

Etching

Forming

Diffusion

Arsenic

Gallium

Antimony

Phosphorus

Boron

Indium

Arsenic

Gallium

Half of the input A/C frequency

Double the input A/C frequency

Same frequency of the A/C input

Three times the input A/C frequency