A servo-controlled stabilizer is an electronic device designed to maintain a stable output voltage despite fluctuations in input voltage or load conditions. It uses a feedback mechanism to continuously monitor the output and make real-time adjustments, ensuring that connected equipment receives a consistent power supply. These stabilizers are commonly used in various applications, including industrial machinery, medical equipment, and sensitive electronic devices. By providing a stable voltage, they help protect equipment from damage caused by voltage spikes or drops, ultimately enhancing performance and extending the lifespan of the devices they support.