A step-up transformer is a type of transformer that increases the voltage from the primary coil to the secondary coil while maintaining the same power at the rated frequency in both coils. It converts low voltage & high current from the primary side to the high voltage & low current on the secondary side of the transformer.
The working principle of a step-up transformer is based on the principle of electromagnetic induction. When an alternating current (AC) flows through the primary coil, it creates a magnetic field. This magnetic field then induces an AC current in the secondary coil. The voltage in the secondary coil is proportional to the number of turns in the secondary coil divided by the number of turns in the primary coil..

Step-up transformers are used in a variety of applications, including:
• Power transmission
• Electrical distribution
• Medical equipment
• Industrial machinery
• Telecommunications equipment

Step-up transformers are typically made up of two coils of wire wound around a common core. The core is typically made of a ferromagnetic material, such as iron or steel. The number of turns in the primary coil is typically less than the number of turns in the secondary coil.

The main advantage of using a step-up transformer is that it can be used to increase the voltage of an AC current without increasing the current. This can be beneficial in a number of applications, such as power transmission and electrical distribution.

The main disadvantage of using a step-up transformer is that it can be inefficient. Some of the energy in the primary coil is lost as heat in the secondary coil.

Here are some of the factors that affect the efficiency of a step-up transformer:

• The number of turns in the primary and secondary coils
• The material of the core
• The frequency of the AC current

The efficiency of a step-up transformer can be improved by increasing the number of turns in the secondary coil, using a high-quality core material, and using a low-frequency AC current.