## Posts Tagged ‘secondary windings’

### Centre Tapped Transformer

June 27th, 2013 | 12 Comments | Posted in Electrical distribution
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Here’s the 6th part Nasir’s tutorial on transformers. Enjoy and leave your impressions. Don’t forget you can send your own articles, works, reviews or tutorials; just send us a mail!

#### Working Principle of a Centre Tapped Transformer

A Centre Tapped transformer works in more or less the same way as a usual transformer. The difference lies in just the fact that its secondary winding is divided into two parts, so two individual voltages can be acquired across the two line ends.

The internal process is the same, which is when an alternating current is supplied to the primary winding of the transformer it creates a magnetic flux in the core, and when the secondary winding is brought near, an alternating magnetic flux is also induced in the secondary winding as the flux flows through the ferromagnetic iron core and changes its direction with each and every cycle of the alternating current. In this way an alternating current also flows through the two halves of the secondary winding of the transformer and flows to the external circuit.

### 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: