What is a voltage stabilizer and its function

Mingchuan Voltage Regulator: It is a power supply circuit or power supply device that can automatically adjust the output voltage. Its function is to stabilize the power supply voltage required by large fluctuations and incompatible electrical equipment within its set value range, enabling various circuits or electrical equipment to operate normally at the rated operating voltage.
Regulators include large power regulators ranging from tens to hundreds of kilowatts, which are used as working power supplies for large experimental equipment. There are also small AC voltage regulators ranging from a few watts to several thousand watts, which provide high-quality power for small laboratories or household appliances,
The initial power regulators relied on the pulsation of relays to stabilize the voltage. When the grid voltage fluctuates, the automatic correction circuit of the power regulator starts, causing the internal relay to operate. Force the output voltage to remain at the set value
Recently, the advantage of this circuit is that it is simple, while the disadvantage is that the voltage stabilization accuracy is not high and every time the relay jumps and shifts, it will cause a momentary interruption of the power supply and generate spark interference.
This greatly interferes with the reading and writing work of computer equipment, easily causing erroneous signals on the computer, and even damaging the hard disk in severe cases.
Nowadays, high-quality small voltage regulators mostly use the method of dragging carbon brushes by electric motors to stabilize the voltage. This type of voltage regulator has little interference with electrical equipment and relatively high voltage stabilization accuracy.