All About Toroidal Inductors And Common Mode Chokes - Miracle Electronics

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All About Toroidal Inductors And Common Mode
Chokes Miracle Electronics
Toroidal inductors are insulated coils that are
wire wound on a ring-shaped core made of
powdered iron, ferrite, or any such material. The
advantage of the ring shape is that due to its
symmetry, the amount of magnetic flux that
escapes outside the core is low, thus
making it more efficient by radiating
lesser electromagnetic interference. Toroidal
inductors have more inductance per turn, and
carry more current as compared to solenoids with
a core of the similar material and size. This is
why these inductors are used at low frequencies
where large inductances are required.
Working of Toroidal Inductors The current that
passes through the toroidal inductor produces a
magnetic field around it the strength depending
upon the value of current. The flux of this
magnetic field is the number of concentric
circles perpendicular to the direction of the
flowing current. These flux lines form complete
loops around the coil. If the
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current flowing is altered, the magnetic flux
also alters at the same rate that links to the
coil, thus inducing electromotive force within,
which is in opposite to the applied voltage
across the coil. Applications of Toroidal
Inductors A large variety of industries use
toroidal inductors in various devices. These
include healthcare, telecommunications,
aerospace, nuclear fields, etc. the various
applications include electronic brakes,
electronic clutches, musical instruments,
refrigerators, air conditioners, medical devices,
industrial controls, amplifiers, switching
regulators, and power supplies. Types of
Toroidal Inductors Toroidal inductors are
categorized into various types depending upon
various factors like nominal inductance, DC
resistance, case size, current rating, tolerance,
and packaging type. The nominal inductance of
toroidal inductors range between 10 µH and 920
µH, with the most common measurements being 25
µH, 28 µH, 50 µH, 51 µH, 75 µH and 100 µH. the
most common DC resistance measurements for such
inductors range in 5 mO, 19 mO, 20 mO, 22 mO, 50
mO, 55 mO and 550 mO. Based on all these
measurement and features, the most commonly used
types of toroidal inductors include standard,
high temperature, low loss, current sensing,
couples, vertical, SMD high current, and SMD
power toroidal inductors. Common Mode
Chokes Common mode chokes are generally used to
filter and reduce unwanted electromagnetic
interference, without affecting the signal this
property being very useful to filter power lines
and protect electronic equipment. These common
mode chokes have two coils wound around a single
core. The most common types of common mode
chokes seen include vertical common mode chokes
with base, vertical encased core common mode
chokes, vertical encapsulated core common mode
chokes, SMD horizontal common mode chokes, and
SMD common mode chokes with case.
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To summarize, we can say that both toroidal
inductors and common mode chokes are used for
maintaining signal control. However, when it
blocks higher frequencies, an inductor can be
called a choke. Apart from toroidal inductors and
common mode chokes, if you are looking for the
finest toroidal transformer in India too, you can
approach Miracle Electronics, who manufactures
all of this and more of electronic equipment for
various devices, using the best raw materials
and the finest workmanship.
For more details, please visit Miracle
Electronics