Half Wave Rectification
Rectifier
A Simple rectifier is an electrical
device, which converts alternating current AC
Alternating Current to direct current DC, a process
known as
rectification
Rectifiers are used as components of power supplies
and also used as detectors of radio signals. It is a
vital concept of physics. Rectifiers may be made of
solid state diodes, vacuum tube diodes, mercury valves.
....
Half Wave rectifier
A
half-wave rectifier converts an
alternating voltage like a socket for
example, into a pulsing DC signal. It can
be described as a convertor of AC to
DC.Further we can do filtration with
'filters' and 'regulators' to produce a
steady DC voltage (e.g battery of 9v.) The
basic half-wave rectifier is a 'diode'.
This is an electrical uni pass that only
allows flow of current in one direction.
When the AC voltage is going one
direction, the diode allows current flow.
When the AC is of the opposite direction,
the diode blocks current flow. Since only
one half of the full AC signal is allowed
to pass, it is called a half-wave
rectifier. Using 2 diodes and a
transformer, or 4 diodes arranged in a
bridge rectifier circuit, the entire wave
can be converted and it is called a
full-wave rectifier or full wave
rectification.
In half wave rectification, either the
positive or negative half of the AC wave is passed
easily, while the second half is blocked, depending on
the polarity of the rectifier. Because only one half of
the input waveform reaches the output, hence it is not
used for power transfer. Half-wave rectification can be
achieved with a single diode in a one phase supply.
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