SVC series fully automatic high-precision A.C. voltage stabilizer consists of contact voltage regulator, sampling control circuit and servo motor. When in put voltage or load changes, sampling control circuit will sample and amplify the voltage, and the servo motor will rotate in the desired direction, turning the arm to regulate voltage until the output voltage is regulated into the rated one. It is of small size, light weight, reliable performance with no output waveform distortion. To guarantee its perfect quality, we adopt foreign advanced technology and import key parts and components of the voltage stabilizer. It is widely used in electrical appliances which need constant voltage power supply, and applied to many fields like home appliances, industrial production, scientific research and medical and health care. The product can be continuously used for a longtime with high efficiency and low power consumption.