Signal isolation is a technique used to prevent unwanted interference between different electrical signals. This is important in various applications, such as in telecommunications and data transmission, where clear and accurate signals are essential. By isolating signals, devices can operate without affecting each other, ensuring better performance and reliability. One common method of achieving signal isolation is through the use of optical isolators or transformers. These components allow signals to pass while blocking unwanted noise or feedback. This helps protect sensitive equipment and improves overall system efficiency, making it a crucial aspect of modern electronic design.