This circuit describes AC voltage stabilizer ,/ automatic voltage regulator function with its input voltage range from AC 120 to 260V, at output voltage of AC 220 ( 1 ± 10%) V, Output power for this can be 300-1000W depending upon the transformer used. Working:- AC voltage regulator circuit forms the power circuit with transformer and the voltage detection control circuit , as shown in Figure above . Voltage sensing circuit consists of four operational amplifiers formed out of an integrated circuit IC (Nl-N4),operating in comparator mode. Resistor, R7, capacitors C4, a potentiometer P, relay Kl-K4, are other sections of the circuit. . R7, RP, VD5, VD6 with C4 are for input voltage sensing circuit. Power supply for the circuit consists of series capacitor Cl, C2, resistor Rl, a bridge rectifier diode VDl-VD4, a filter capacitor C3,a zennor regulator diode…
Read MoreVoltage Stabilizer for very low ac input
