A linear actuator is a mechanical device that converts energy (usually electrical) into linear motion. It's used to create motion in a straight line, often to move or position something. These actuators can vary in design and operation but typically consist of a motor, a lead screw, and a nut. When the motor is powered, it rotates the lead screw, which in turn moves the nut along the screw. This movement creates linear motion, pushing or pulling whatever is attached to the actuator. Linear actuators find applications in various fields such as robotics, industrial machinery, automotive systems, medical devices, and home automation. They are utilized for tasks like opening and closing doors, adjusting the position of solar panels, controlling valves, and more, offering precise control and movement in linear applications.