1. Step-Up Transformer

A step-up transformer increases the voltage from the primary winding to the secondary winding. It has more turns in the secondary coil than in the primary coil, which allows it to step up the voltage while stepping down the current.

Two uses of step-up transformers are: 

• Power Transmission: Used in power plants to increase voltage for efficient long-distance transmission of electricity, reducing energy loss due to resistance in wires.
• Induction Heating: Employed in induction heating applications where high voltages are necessary for heating metals.           

   2.Step-Down Transformer

A step-down transformer decreases the voltage from the primary winding to the secondary winding. It has more turns in the primary coil than in the secondary coil, which allows it to step down the voltage while stepping up the current.

Two uses of step-down transformers are:

• Power Adapters: Commonly found in power adapters for electronic devices to convert high-voltage electricity from outlets to lower voltages suitable for devices.
• Lighting Systems: Used in lighting systems, such as street lights and outdoor lighting, where lower voltages are required for safety and efficiency.