Rectifier
A
rectifier is an electrical device that converts alternating current (AC) to
direct current (DC). The process is known as rectification.
Usual rectifiers:
Vacuum
tube diodes, mercury-arc valves, solid-state diodes, silicon-controlled
rectifiers and other silicon-based semiconductor switches.
Rectifier Circuit
Single
phase Half Wave Rectifier:
Fig:
Half wave rectifier circuit with a diode
Single
phase Full Wave Rectifier
Fig: Full wave
bridge rectifier
Inverter
A
power inverter, or inverter, is an electrical power converter that changes
direct current (DC) to alternating current (AC); the converted AC can be at any
required voltage and frequency with the use of appropriate transformers,
switching, and control circuits.
Capacitor
A
capacitor (originally known as condenser) is a passive two-terminal electrical
component used to store energy in an electric field. That is at least two
electrical conductors separated by a dielectric (insulator).
Applications of capacitors
·
Energy storage
o
A capacitor can store
electric energy when disconnected from its charging circuit, so it can be used
like a temporary battery. Capacitors are commonly used in electronic devices to
maintain power supply while batteries are being changed. (This prevents loss of
information in volatile memory.)
·
Power factor correction
·
Suppression and coupling
·
Noise filters and snubbers
·
Motor starters
·
Signal processing
·
Sensing
Inductor
An
inductor (also choke, coil, or reactor) is a passive two-terminal electrical
component that stores energy in its magnetic field.
When
the current flowing through an inductor changes, a time-varying magnetic field
is created inside the coil, and a voltage is induced, according to Faraday’s
law of electromagnetic induction, which by Lenz’s law opposes the change in
current that created it.
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