Linear regulator

A linear regulator is a simple electronic device that maintains a steady voltage output from a higher, variable input voltage. It works by continuously adjusting its internal resistance to drop excess voltage as heat, ensuring consistent power supply to connected components. Think of it as a water valve that smoothly controls flow, preventing fluctuations that could damage delicate electronics. While effective and straightforward, it can be less efficient because it wastes some energy as heat. Linear regulators are commonly used in power supplies where a stable voltage is needed for sensitive devices.