Name: Purely Inductive Circuit
Uploaded: 2019-07-19
Duration: 5 min 40 s
Description: How does an inductor behave in a circuit? This video will explain every parameter involved in the derivation of a pure inductor working with AC supply.

Question

Describe the transformer under the headings:

$(i)$ Labelled diagram

Accepted Answer

Transformers can be constructed in a way that it can convert the voltage level of the primary side to the secondary side. Depending on the voltage level, the transformer has two categories. Step Down, Step Up

1. Step-Down Transformer

Step down Transformer is used in both Electronics and Electrical domain. A step-down transformer converts the primary voltage level to a lower voltage across the secondary output. This is achieved by the ratio of primary and secondary windings. For step-down transformers the number of windings is higher across the primary side than the secondary side. Therefore, the overall winding ratio of primary and secondary always remains more than 1.

In electronics, many applications run on 5V, 6V, 9V, 12V, 24V or in some cases 48V. To convert the single phase power outlet voltage 230V AC to the desired low voltage level, Step Down transformers are required. In instrumentation as well as in many electrical types of equipment, Step-Down transformer is the primary requirement for the Power section. They are also used in power adapters and cell phone charger circuits.

In electrical, step down transformers are used in electrical distribution system which works on very high voltage to ensure low loss and cost-effective solution for long distance power delivery requirements. To convert the high voltage to a low voltage supply line, Step down transformer is used.

2. Step-Up Transformer

Step Up transformer is exactly opposite of the step-down transformer. Step up transformer increase the low primary voltage to a high secondary voltage. Again it is achieved by the ratio of primary and secondary winding ratio. For the Step Up transformer, the ratio of the primary winding and the Secondary winding remains less than 1. That means the number turns in secondary winding is higher than the primary winding.

In electronics, step up transformers often used in stabilizers, inverters etc where low voltage is converted to a much higher voltage.

A step-up transformer is also used in Electrical power distribution. High voltage is required for power distribution related application. Step up transformer is used in the grid to step up the voltage level before the distribution.

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