Voltage stabilizer is a power supply circuit or power supply device that can automatically adjust the output voltage. Its function is to stabilize the voltage of the power supply that fluctuates greatly and does not meet the requirements of electrical equipment within the set value range. The purpose of voltage stabilizer is to enable various circuits or electrical equipment to work normally under the rated operating voltage.
At the very beginning, the voltage stabilizer stabilized the voltage through the beating of the relay. When the voltage of the grid fluctuates, the automatic correction circuit of the voltage stabilizer will be activated to activate the internal relay and force the output voltage to remain close to the set value. The advantage of this circuit is that the circuit is simple, but the disadvantage is that the voltage regulation accuracy is not high, and every beat and shift of the relay will cause an instantaneous interruption of the power supply and spark interference.