Transformers are important electronic devices; they are used to supply an amount of electricity from one electric circuit to another; in this transaction, there are no changes in the frequency of the flowing electric charge. Windings, insulated materials, conservators, etc, are parts of a transformer. These parts play an essential role in the functions of the DC transformer. In addition, transformers are extensively used in various electronic devices; the following paragraphs will explain what a dc transformer is, its applications, and its working principles.

Transformers

A transformer is defined as an electric device that transforms the electric current from one electric circuit to a different electric circuit without making any changes in the frequency of the current. A transformer is also considered a static electric device because, unlike generators, transformers do not have a moving part. The transformers work on the principle of mutual induction under a magnetic field.

Over the years, transformers have evolved as a major industrial tool; these devices make it easy and safe to supply electricity from one circuit to another. As a result, the introduction of transformers has revolutionised many countries’ industrial growth and power supply. 

Different types of transformers

A transformer can be classified based on various parameters, such as its usage, construction, and purpose; a transformer may be as small as a mobile phone adapter and even can be used in supplying electricity to the huge populations of a metro city.

There are different types of transformers; they are:

1. Step-up transformer
2. Step-down transformer
3. DC-DC transformer
4. AC-DC transformer
5. DC-AC transformer
6. AC-AC transformer

DC transformers

Let us now understand what a DC transformer is. A DC transformer is constructed by using superconductors, and a DC transformer is used for the following purposes:

• The functions of a DC transformer include taking the current from a direct current source and converting it into a regular supply.
• Another important function of a DC transformer is maintaining a smooth current supply between the circuit and receiver.

Different parts of DC transformer

Now that we have learned what a DC transformer is and its functions let us look at the different parts of a DC transformer.

• Windings: It is one of the important parts of a DC transformer; this part includes wrapped and bundled copper wires. The amount of winding depends on the supply and the voltage range.

• Insulating materials: This separates the outer and inner windings in a transformer. Paper or cardboard pieces are generally used for this purpose.

• A conservator: This is one of the important parts of a DC transformer, which contains the transformer oil and is placed at the top of the transformer.

• Breather: It is a cylindrical part of a DC transformer and contains a kind of silica gel; it is used to keep the parts of the DC transformer moisture-free.

• Tap changer: A tap changer is an important part of the DC transformer; it balances the voltage fluctuation.

• Cooling tubes: Cooling tubes prevent transformers from malfunctioning; a cooling tube’s function is to cool down the transformer oil.                                                     

• Buchholz Relay: The function of the Buchholz Relay is also to prevent malfunctioning in the transformer; this device detects any faults within the transformer.

• Explosion vent: When the temperature of transformer oil becomes too high, it is released from the explosion vents to avoid a complete breakdown of a transformer.

Working principle of a DC transformer

The functions of DC transformation are based on the principle of mutual induction between two circuits. A DC transformer consists of two coils separated by placing an insulating material between them; these coils do not possess any electric charge and are static. However, these coils are joined together by a magnetic field; mutual induction is caused by this magnetic field induced by a current in the transformer. 

Applications of transformers

A transformer has the following applications:

• Used in electric equipment and appliances.
• Power transmission, ie, electricity supply through wires.
• Old television sets and screens.
• Used in power grids to supply the electricity.
• Transformers are also used in charging devices, such as mobile and other electronic chargers.

Conclusion

A transformer transfers electric charge from one part of a circuit to another without affecting the frequency of the charge circulating in the circuit. A transformer is of various types and has a wide range of uses. For example, the transformer is used for our mobile phones to electricity lines. 

The working principle of a DC transformer is the principle of mutual Induction; different parts of a DC transformer play an important role in the device’s functioning. The above article explains what a DC transformer is, the different parts of a DC transformer, the functions of a DC transformer, and its applications.