Brushless DC motors are electric motors that operate without brushes, which are components that traditionally help transfer electricity to the motor's rotating part. Instead, they use electronic controllers to manage the power supply, resulting in higher efficiency, reduced maintenance, and longer lifespan. These motors are commonly found in applications like electric vehicles, computer fans, and drone propellers. The design of brushless DC motors typically includes a rotor with permanent magnets and a stator with coils. When electricity flows through the coils, it creates a magnetic field that interacts with the rotor's magnets, causing it to spin. This technology allows for precise control of speed and torque, making them ideal for various industrial and consumer applications.