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What is a transformer?
A
transformer is a static piece of apparatus with two or more
windings which, by electromagnetic induction, transforms a system
of alternating voltage and current into another system of voltage
and current of same values or of different values, and at the
same frequency for the purpose of transferring electrical power.
Although transformers look simple, its design involves a few
very important electromagnetic laws and formulas, which were
developed by Joseph Henry and Michael Faraday.
As mentioned above, one of the important building blocks is
a two-coil wire - namely primary and secondary windings. These
two windings are placed in a very close proximity and are linked
by the alternate flux in the core. As the result, the voltage
is induced in the winding. The formula below is used to calculate
the induced voltage in the secondary winding.
E = kAcNBmf(10-4)
Where,
E – induced voltage
k – constant, 4.44 for sinewave
4.00 for squarewave
Ac – cross section area of core in cm2
N – number of turn which induces the voltage
Bm – maximum flux density of the core in Tasla
f – frequency in Hz
Armed
with the above formula, one can increase or decrease the amount
of turns of the winding to increase or decrease the induced
voltage. Indeed, there are more turns on the secondary winding
than in the primary winding for a step-up transformer and vise
versa for a step-down transformer.
As
many wonder what a transformer may do, if the windings are not
correctly designed and manufactured, they may cause harm to
the system in which the transformer is used, and put the user
in danger because of the risk of electrocution, burns, and fires.
At Toroid Corporation, we take pride in the design and
fabrication of our toroidal transformers. We design the transformers
to be accurate to the customers’ specifications and make
them safe, highly efficient and long-lasting.
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Can I get a brochure?
Sure! Just send an e-mail to sales@toroid.com,
including your name, company name, address, and phone number,
and we will get one out to you ASAP!
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