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 flow of electricity, resulting in higher efficiency, reduced maintenance, and longer lifespan compared to brushed motors. These motors are commonly found in various applications, including electric vehicles, drones, and computer cooling fans. Their design allows for smoother operation and better performance, making them a popular choice in modern technology where reliability and efficiency are essential.