A Current Limiter is an electrical device designed to restrict the flow of electric current to a specific level. This is important for protecting circuits and components from damage due to excessive current, which can lead to overheating or failure. Current limiters are commonly used in various applications, including power supplies, battery chargers, and electronic devices. These devices can operate in different ways, such as using resistors or electronic components like transistors. By monitoring the current flow, a current limiter can automatically adjust the output to ensure it stays within safe limits. This helps maintain the reliability and longevity of electrical systems, making them essential in modern technology.