Which Transformers Are Best For Electrical Isolation In Medical Devices - Miracle Electronics

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With a multitude of transformer options
available, identifying the best one out of the
lot becomes difficult, for every individual
application. And, the application that we are
going to speak about in this blog is a critical
one medical devices. No kind of fault can be
afforded in the case of medical applications.
This is why only the most ideal kind of
transformer that can offer safety and protection
against electrical surges should be used. So,
which one is it?
Toroidal transformers is the answer. Toroidal
transformers are ideal for electrical isolation
in medical equipment as they are compact, have
low stray fields, and can be encapsulated when
required. Hence, these transformers are less
likely to cause electromagnetic disturbances.
Isolation is when two parts of a circuit are
physically and electrically separated, which is
achieved by using electromagnetic field coupling
between the two circuits. Isolation provides
several safety advantages like breaking ground
loops, improving common-mode voltage rejection,
and permitting the two parts of the circuit to be
at different voltage levels. For an isolation
method to be safe enough for use in medical
equipment, it needs high-integrity isolation
components and a safe insulator barrier. The
three most commonly used isolation methods
include transformers, capacitive
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couplers, and optocouplers. But, in this blog, we
will focus on the use of transformers to
electrically isolate medical equipment. A
transformer transfers energy between two or more
circuits through electromagnetic induction. They
increase or decrease the voltages of alternating
current in electric power applications, by
passing a varying current through the primary
winding to generate a magnetic flux in the
transformers core, which in turn induces a
voltage in the transformers secondary
winding. Toroidal cores are made form a
continuous strip of silicone steel wound like a
tight clock spring, with the ends tacked into
place with small spot welds to prevent the
coiled steel from unwinding. The core is
insulated with an epoxy coating or a set of caps
or multiple wraps of insulating film. The
transformers windings wound around the core
require additional insulation to be isolated.
However, the construction of a toroidal
transformer is very labour-intensive. But yet,
these transformers are preferred more than any
other transformer because of its performance.
With the continuous strip of steel used in the
core, the transformer becomes smaller, lighter,
more efficient, and quieter than other kinds of
transformers. These qualities are the most apt
for sensitive medical electrical equipment and
clearly justify the additional expense. Thus, to
conclude, toroidal transformers are ideal for
electrical isolation in medical equipment. So,
if you are looking for the perfect transformer
for your application, just get in touch with
Miracle Electronics, a reliable and reputed
medical transformer manufacturer in India, who
can provide you with the most ideal toroidal
medical isolation transformer And, you can rest
assured about the quality of transformers you
will get here because every medical isolation
toroidal transformer youll get will be RoHS and
REACH compliant, adhering to the regulations
under UL 60601-1 standards.