What is the purpose of an isolation transformer?

An isolation transformer is primarily used to provide electrical isolation for safety. This type of transformer separates the electrical circuit from the power source, which helps to minimize the risk of electric shock or equipment damage. By isolating the load from the electrical supply, it creates a barrier that helps protect both personnel and sensitive electronic devices.

This safety feature is particularly important in environments where users may be in direct contact with the electrical equipment, such as medical facilities or testing labs. Isolation transformers can also prevent ground loops, which can lead to interference in sensitive signal processing applications.

The other options, while relevant to transformers in general, do not accurately describe the main function of an isolation transformer. Amplifying signal strength, increasing voltage levels, or reducing transformer size are not primary purposes of isolation transformers, as their core focus is centered on safety through electrical isolation.