A servo voltage stabilizer is a stabilizer that constantly monitors the output voltage and controls variations in the input voltage by the movements of a motor. In other words, it automatically regulates the voltage. This motor decides the output voltage on the transformer. It is considered to be a cheap and good servo controlled voltage stabilizer. This is a perfect solution to protect the appliances from voltage fluctuations. Enertech India the leader in Single-Phase voltage stabilizer manufacturers, offers advanced microcontroller-based voltage stabilizers.