What is the working principle of voltage regulator

The voltage regulator is a device that stabilizes the output voltage. The voltage regulator consists of a stabilized constant voltage, a control circuit and a servo motor. When the input voltage or load changes, the control circuit samples, compares, and amplifies, and then drives the servo motor to rotate, so that the carbon brush position of the voltage regulator changes. By automatically adjusting the coil turns ratio, the output voltage is kept stable. Scope of application:The voltage regulator can be widely used in industrial and mining enterprises, oil fields, railroads, construction sites, schools, hospitals, post and telecommunications, hotels, scientific research and other departments, precision machine tools, CT, precision instruments, test equipment, elevator lighting, imported equipment, production lines, and other places that need to stabilize the supply voltage. It is also applicable to the end users of low-voltage distribution network whose supply voltage is too low or too high, with large fluctuation range, as well as the power-using equipment with large load fluctuation, and it is especially suitable for all the places which have high requirements on the waveform of the power grid. High power compensation type power stabilizer can be connected with thermal power, hydropower and small generator. Role:Voltage stabilizer is a kind of power circuit or equipment that can automatically adjust the output voltage. Its role is to stabilize the power supply voltage that fluctuates greatly and cannot meet the requirements of the power equipment within its set value, so that all kinds of circuits or power equipment can work normally under the rated working voltage. First of all, the power regulator stabilizes the voltage through the tripping of the relay. When the grid voltage fluctuates, the power regulator's auto-correction circuit is activated, causing the internal relay to operate. The output voltage is forced to stay near the set value. The advantage of this circuit is the simplicity of the circuit, and the disadvantage is the low accuracy of the voltage stabilization. Every time the relay jumps and shifts gears, the power supply is momentarily interrupted, producing spark interference. This greatly interferes with the reading and writing of computer equipment, and can easily cause computer error signals. In serious cases, the hard disk will be damaged. High-quality small regulators are mostly used to stabilize the voltage by dragging the carbon brushes by the motor, which has little interference with electrical equipment and relatively high accuracy of voltage stabilization.