1.Servo Type Voltage Stabilizers 2.Electronic Type Voltage Stabilizers 3.Supervolt Power Voltage Stabilizers 4.Isolation Transformers A Voltage Stabilizer maintains a constant voltage level automatically, offering protection to equipment against voltage surges, under-voltage, or over-voltage while smoothing impulsive noise. WHAT ARE VOLTAGE STABILIZERS? A Voltage Stabilizer has been created to maintain a constant voltage level automatically, offering protection to equipment against voltage surges, under-voltage, over-voltage, whilst smoothing impulsive noise. A Voltage Stabilizer is also referred to as an Automatic Voltage Stabilizer, AC Voltage Stabilizer or Voltage Regulator. An Automatic Voltage Stabilizer has been created to automatically maintain a constant level of voltage so that your electrical equipment would be protected at all times against over-voltage, under-voltage as well as surges, leveling impulsive noise. Voltage Stabilizer is also called Automatic Voltage Stabilizer, AC Voltage Stabilizer or Voltage Regulator.