What does an isolation transformer do?

An isolation transformer is primarily designed to enhance safety by electrically separating two circuits. This separation prevents direct electrical connection, which means that there is no conducting path between the input and output, allowing for better protection from electrical shock and the reduction of potential fire hazards. This isolation reduces the risk of transferring noise and disturbances from one circuit to another, making it particularly useful in sensitive applications, such as in medical equipment or audio systems, where such disturbances can cause significant problems.

While other choices may address functions of different types of transformers, they do not accurately describe the unique function of an isolation transformer. The correct choice directly relates to the primary purpose of isolation transformers, which is to create a safer electrical environment by isolating electrical systems.