A linear power supply is a type of power supply that converts electrical power from one form to another using linear regulation. It typically consists of a transformer, rectifier, and voltage regulator. The transformer steps down the voltage, while the rectifier converts AC (alternating current) to DC (direct current). The voltage regulator then ensures a stable output voltage, making linear power supplies ideal for sensitive electronic devices. One of the main advantages of linear power supplies is their simplicity and reliability. They produce low noise and provide a clean output, which is crucial for applications like audio equipment and laboratory instruments. However, they are generally less efficient than switching power supplies, as they dissipate excess voltage as heat.