A servo-controlled system refers to any mechanism that uses a closed-loop feedback system to achieve highly precise and automated control over a process. In the context of voltage stabilizers, a servo-controlled stabilizer employs a servo motor to make continuous and smooth corrections to voltage fluctuations. The system works by using a sensing circuit that constantly monitors the output voltage. If the voltage deviates from the set value, the circuit sends a signal to the servo motor, which then adjusts a variable transformer. This constant, real-time adjustment ensures a stable and accurate output voltage, typically with an accuracy of ±1%. This technology is a significant improvement over conventional stabilizers that use relays and provide corrections in discrete steps, making servo-controlled systems ideal for protecting sensitive and expensive machinery from voltage-related damage.
