All You Need To Know About Power Inductors | Miracle Electronics

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All You Need To Know About Power Inductors
Miracle Electronics Power inductors are those
elements that are used to reduce core losses in
applications that require voltage conversion.
They are also used to store energy, filter EMI
noise, and provide lower signal loss in system
design. An inductor can also be used in a
magnetic field created by a tightly wound coil to
receive or store electrical energy. It helps in
maintaining a steady current in an electrical
circuit with varying current or voltage.
Inductors and transformers seem very familiar in
visual and constructional sense, but they differ
in their design and applications. whatever your
choice, whether it is to select the best power
inductors or power transformers in India, you
can approach Miracle Electronics for all kinds of
high quality electrical elements for
residential, commercial, as well as industrial
usage.
Types of power inductors There are various types
of power inductors that can be categorized based
upon multiple factors like dimension, DC
resistance, nominal inductance, maximum rated
current, tolerance, packaging, and shielding.
Listed below are the most popular types of power
inductors available.
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• Air core inductor This is an inductor that does
  not use a magnetic core made of ferromagnetic
  material. Instead, coils are wound on ceramic,
  plastic, or other non-magnetic materials with
  air inside the windings. These have
  comparatively lower inductance, but are used at
  high frequencies as they are free from energy
  losses.
• Radio frequency inductor At high frequencies,
  inductors have higher resistance and other
  losses, which reduces the Q factor of the
  circuit, thus broadening the bandwidth. Radio
  frequency inductors are those that have
  specialized construction techniques used to
  minimize the losses. In radio frequency
  inductors, the windings are limited to a single
  layer with turns spaced apart.
• Ferromagnetic core inductor As the name
  suggests, these are inductors made of a
  ferromagnetic core like iron or ferrite to
  increase inductance. However, the magnetic
  properties of the core material cause two main
  side effects, namely core losses and
  non-linearity, which alter the behaviour of the
  inductor.
• Laminated core inductor These low-frequency
  inductors made of laminated cores prevent eddy
  currents. The core is coated with an insulating
  layer, which prevents eddy currents between the
  sheets that it is made of. This property reduces
  the energy losses by reducing the area of the
  loop.
• Ferrite-core inductor These inductors have
  cores made of ferrite that is non- conductive
  thus eddy current cannot flow within it. Soft
  ferrites are used that have low coercivity and
  low hysteresis losses.
• Toroidal core inductor These are inductors
  having doughnut-shaped ferrite cores that allow
  minimum magnetic flux to escape outside, thus
  radiating less electromagnetic interference.
  These cores can also be made of powdered iron or
  laminated cores.
• Applications of power inductors
• Power inductors are used for various applications
  based on certain technical characteristics like
  power supply, high current, high power, and
  surface mount power. Surface mount power
  inductors are used to store energy while
  EMI

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currents are filtered with low loss inductance in
application where voltage conversion is
performed. The basic applications include those
that need to filter EMI noise in AC inputs, or
store energy in DC-DC converters, or filter low
frequency ripple current noise. Selecting an
appropriate power inductor While selecting a
power inductor, you need to focus on the size,
geometry, winding characteristics, and
temperature capacity of the inductors you are
willing to buy. Other factors include power
levels for voltages and currents, and
requirements for inductance and current. It is
also important to base your selection upon the
current in which the core saturates and exceeds
the applications peak inductor current. You can
also select your power inductors by focusing on
their tolerance, nominal inductance, and maximum
rated current. For more details, please visit
Miracle Electronics