Current is the cause of electric shock!

Here is a video demonstrating what we discussed in yesterday's tutorial: Why are we electrically shocked?
Moreover, how birds set on high power lines are not electrified?
The clue is the flow of current

A Simple Circuit to Convert AC to DC Signal

Full-Wave Bridge Rectifiers

A popular full-wave rectifier design exists, and it is built around a four-diode bridge configuration. For obvious reasons, this design is called a full-wave bridge. (Figure below)

Full-wave bridge rectifier.