Transformers (9)

Audio Transformer

As well as stepping up (increase) or stepping down (decrease) a signal voltage, transformers also have one very other useful property, isolation. Since there is no direct electrical connection between their primary and secondary windings, transformers provide complete electrical ...

Transformer Voltage Regulation

Voltage regulation is the measure of how well a transformer can maintain a constant secondary voltage under varying load conditions, as the output secondary voltage may not be what we expect. When the primary winding of a transformer is energised, it produces a secondary voltage ...

Three Phase Transformers

A three-phase electrical system in used to generate and transmit electric power over long distances for use by offices and industry. Three-phase voltages (and currents) are raised or lowered by means of three phase transformers as the three phase transformer can have its windings...

The Current Transformer

The Current Transformer ( C.T. ), is a type of "instrument transformer" that is designed to produce an alternating current in its secondary winding which is proportional to the current being measured in its primary. Current transformers reduce high voltage currents to a...

The Autotransformer

Unlike the previous voltage transformer which has two electrically isolated windings called: the primary and the secondary, an Autotransformer has only one single voltage winding which is common to both sides. This single winding is "tapped" at various points along its length to ...

Multiple Winding Transformers

Multiple Winding Transformers generally have one single primary winding with two or more secondary windings. But the beauty of transformers is that they allow us to have more than just one winding in either the primary or secondary side. Transformers which have more than one wind...

Transformer Loading

In the previous transformer tutorials, we have assumed that the transformer is ideal, that is one in which there are no core losses or copper losses in the transformers windings. However, in real world transformers there will always be losses associated with transformer loading a...

Transformer Construction

A transformer construction provides a magnetic circuit, known more commonly as the "transformer core", which is designed to provide a path for the magnetic field to flow around. This magnetic path is necessary for the induction of voltage between the two input and output windings...

Transformer Basics

In this tutorial about transformer basics, we will se that a transformer has no internal moving parts, and are typically used because a change in voltage is required to transfer energy from one circuit to another by electromagnetic induction. One of the main reasons that we use ...