What Are Audio Transformers - Miracle Electronics

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When youre looking for impedance matching,
stepping up operations, or stepping them down in
audio applications, an audio transformer is what
you need, which transmits and modifies input
electromagnetic signals into output signals via
inductive coupling.
How do audio transformers work? Audio
transformers comprise of copper wire windings
around a steel or nickel- iron core. Steel is
used for lower frequency transfer due to its high
degree of hysteresis, while nickel is used for
higher frequencies because of its high
permeability. The windings around the core
determine the increase, decrease, or maintained
impedance level, as the signal passes through the
transformer. It is the number of turns on each
winding that determines whether the transformer
provides a gain or loss of signal. More turns on
the input winding means a decrease in signal,
while more turns on the output winding means an
increase. The difference between these input and
output signals is what is known as impedance
ratio, which is different for different kinds of
audio equipment like amplifiers, loudspeakers,
microphones, and recording equipment. Although an
audio transformer does not have a physical
connection between its primary and secondary
coils, it provides a bi-directional feature
between the two windings. The primary can be
used as secondary, and vice versa. Such
transformers can thus
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provide signal loss in one direction, and signal
gain in the reverse or the other way
round. What purposes do audio transformers
serve? Audio transformers are basically used for
impedance matching, which is determined by the
efficiency of conversion from voltage into
magnetic flux. The input and output impedance
levels are match to create efficient power
transfer without distortion or signal overload.
In this way, the signal is balanced for an
optimal energy transfer. Audio transformers
generally work at frequencies between 20 Hz and
20 kHz in audio amplifier circuits, essential in
valve or tube designs for matching the high
impedance outputs of amplifiers to low impedance
loudspeakers thus allowing maximum power to be
transferred from the amplifier to the speaker.
Audio transformers allow the AC audio signals to
reach the loudspeaker while preventing any DC
from the amplifier to affect the operation of the
loudspeaker. This isolated external connection
thus improves safety. What do you need audio
transformers for? Is it for internal
communication systems, loudspeakers, or recording
studios? Whatever your requirement may be,
choosing genuine quality audio transformers can
prove to be the perfect equipment for your
application. You may choose from standard
available audio transformers, or have your
transformers perfectly customized to your needs
from Miracle Electronics, a reliable and trusted
name in the group of audio transformer
manufacturers in India. Here, youll get
uncompromised audio performance without any
disturbance, because of the strategic
engineering that benefits circuit performance by
transforming circuit impedances to optimize
noise performance. The transformers match the
impedance of the loudspeakers to the optimum load
of the tube or transistor, which makes the
impedance presented to the primary winding equal
to the load of the output stage active element.
Miracle Electronics audio transformers are RoHS
and REACH compliant, and have very low leakage
inductance, which maintains a high-frequency
bandwidth with capacitive loads.