Posts Tagged ‘transformer’

Difference Between Series & Parallel Transformer

June 21st, 2013 | Make a comment | Posted in Electrical distribution
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Right after the article “Behavior of Transformer on Loading“, let’s read the 5th part of Nasir’s tutorial on transformers. You want your articles, works, reviews or tutorials be published in our blog? Simply send us a mail!

We know that a transformer generates its current output with the help of two windings, namely Primary and secondary windings. The primary coil of the transformer is always connected to the alternating power supply, as it is the only method of supplying power to the transformer, by connecting the power supply in parallel with the two free ends of the primary windings. The current produced is then transferred to the secondary winding by Faraday’s law of Mutual Induction.

Since a transformer can have more than one primary winding or secondary windings as well, so if two or more coils exist at any terminal, then they can be connected with each other in two basic ways. These two ways for connecting the two or more windings with each other are:

  1. Series Connections
  2. Parallel Connections

Series Connection of windings

The secondary windings of a transformer, connected in series are shown below:

Difference Between Series & Parallel Transformer 1


Losses in a Transformer

June 7th, 2013 | 15 Comments | Posted in Electrical distribution
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For the 3d part of his tutorial, Nasir, one of the members of the community, focused on losses in a transformer. Knowing that his last tutorial was about the Construction of a Transformer, what will you think about the following?

An ideal transformer is the one which is 100% efficient. This means that the power supplied at the input terminal should be exactly equal to the power supplied at the output terminal, since efficiency can only be 100% if the output power is equal to the input power with zero energy losses. But in reality, nothing in this universe is ever ideal. Similarly, since the output power of a transformer is never exactly equal to the input power, due a number of electrical losses inside the core and windings of the transformer, so we never get to see a 100% efficient transformer.

Transformer is a static device, i.e. we do not get to see any movements in its parts, so no mechanical losses exist in the transformer and only electrical losses are observed. So there are two primary types of electrical losses in the transformer:

  1. Copper losses
  2. Iron losses

Other than these, some small amount of power losses in the form of ‘stray losses’ are also observed, which are produced due to the leakage of magnetic flux.


Construction of a Transformer

May 28th, 2013 | 1 Comment | Posted in Electrical distribution
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Last day, Nasir, one of the members of the communitydropped an article titled “What is a Transformer?“. Today, he sent the second part of this tutorial: Construction of a transformer.

The transformer is quiet simple in construction. As told earlier, it consists of two magnetically linked windings, wound on two separate limbs of iron. It consists of the following basic parts:

  1. Core
  2. Windings

Construction of a transformer


What is a Transformer?

May 24th, 2013 | 3 Comments | Posted in Electrical distribution
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Here’s below an article from Nasir, one of the members of the community. If you want to submit an article as well, please send us a mail.

A Transformer is a device which transfers electric current from one circuit to another, usually by the principal of mutual induction. During this process, the frequency remains constant whereas the voltage can be increased or decreased according to the need.

This transfer of electricity occurs with the help of two coils. One of which is known as the Primary Coil, which is connected to a source of alternating current. The other is known as the Secondary Coil, and it is connected to an external circuit. This constitutes the basic structure of the transformer and is shown below:

What is a Transformer 1


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