An automatic stabilizer is extensively used to maintain the secondary load voltage constant i.e. 220±9%. Therefore, irrespective of the input voltage (usually ranging from 180 V to 250 V), the Best Stabilizer For Ac works to maintain the mentioned voltage value. A voltage sensing circuit containing BC-148 and zenor diode is included. The same circuit is usually used for SK-100 as well as the relay. You can check Stabilizer Price In India to get the best value for your money.