BigPatents India

A Real Grad Automatic Voltage Protector (AVP) is a built -in voltage stabilizer for refrigerator and air conditioner application. AVP-3 (for refrigerator up to 1.8A application) AVP-6 (for air conditioner up to 8A application) and AVP-9 (for air conditioners up to 15 A application). It includes a main transformer, electro magnetic relays and the intelligent control circuit in hybrid microcircuit form. The control circuit stabilizes the output AV voltage, by changing the mains input to the suitable transformer taps using sealed electro magnetic relays.