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What is the voltage stabilizer:

Voltage stabilizer is a device in electrical engineering designed to automatically maintain a constant voltage. A regulator may be of a simple “feedforward” design or may contain a negative feedback control loop. Servo motor control or relay control for the regulator. According to different design, voltage regulator can be divided into DC voltage and AC voltage. Regulators are often used in power supply systems to work with rectifiers, electronic filter, etc. to provide a stable output voltage, such as that required by microprocessors and other components. In large generators at alternator and even at power plants, regulators control the stability of the output voltage. In a distributed distribution system, regulators may be installed in a sub-station or along a wire extension to ensure a stable voltage regardless of the user’s power level. As some electrical appliances contain coil components, eddy currents will be generated at the beginning of electrification, which will weaken the instantaneous voltage at the start of the appliance, resulting in slow start-up and increase the instantaneous voltage after the circuit is broken, could cause a spark that could damage the circuit. At this point need a regulator to protect the normal operation of the circuit. The regulator is composed of voltage regulating circuit, control circuit and Servo Motor. When the input voltage or load changes, the control circuit samples, compares and magnifies, then drives the servo motor to rotate, so that the position of the carbon brush of the regulator changes, the output voltage is kept stable by automatically adjusting the turn ratio of the coil. The voltage regulator with large capacity also works on the principle of voltage compensation.

Why we need to use the voltage stabilizer:

With the rapid development of society, the use of electricity equipment is increasing day by day. However, the aging and lagging development of power transmission and distribution facilities, as well as poor design and insufficient power supply, result in low terminal user voltage and high terminal user voltage, on the electrical equipment, especially on the voltage requirements of high-tech and precision equipment, unique as a time bomb. As a public power grid, the municipal power system is connected with thousands of loads of various kinds, some of which are quite sensible, capacitive, switching power supply and so on, not only get power from the power grid, but also affect the power grid itself, the quality of power supply of power grid or local power grid is deteriorated, resulting in voltage waveform distortion or frequency shift. In addition, unexpected natural and man-made accidents, such as earthquakes, lightning strikes, power transmission and distribution systems open or short-circuit, will endanger the normal supply of electricity, thus affecting the normal work of the load. Unstable voltage will cause fatal injury or misoperation of equipment, affect production, lead to delay in delivery, unstable quality and other losses. At the same time, it speeds up the aging of the equipment, affects the service life and even burns down the fittings, which causes the owners to face the perplexity that needs to be repaired or to renew the equipment in a short time and wastes the resources.

Voltage regulator can be widely used in:

Industrial and mining enterprises, oil fields, railways, construction sites, schools, hospitals, posts and telecommunications, hotels, scientific research and other departments of the computer, precision machine tools, computed tomography photography (CT) , precision instruments, test devices, elevator lighting, import equipment and production lines and other places that need power to stabilize the voltage. The utility model is also suitable for the users at the end of the low-voltage distribution network where the power supply voltage is too low or too high and the fluctuation range is large, and for the power equipment with large load variation. High-power compensated power regulator can be connected with fire power, hydraulic power, small generators.

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Whenever it rains, a lot of friends are wondering: “heavy rain, many lighting equipment is still on, because the rain is too big, and the current instability? ” Since there may be some unexpected accidents, the power sector has long thought of these sudden problems,they will installed the voltage regulator in advance in some important sections of the road lighting equipment.

In a city, the lights on the entire road are often powered by a line, when the night is coming ready to open, a large current generated in an instant. If there is no regulator on the whole line, it is very likely to lead to unstable current output, will affect the lighting of street lights, there may be damaged bulbs. If the light bulb were to explode again, causing injury to pedestrians, it would be a public event. Therefore, it is really necessary to install the voltage regulator in advance. Some important areas, 24 hours can not turn off the lights, it is necessary to install voltage regulator.

What are the advantages and disadvantages of common voltage regulators?

A voltage regulator is a device that stabilizes the output voltage. The voltage stabilizer is composed of a voltage regulating circuit, 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 to change the position of the carbon brush of the voltage regulator. By automatically adjusting the coil turns ratio, the output voltage is kept stable. In this article, the editor will give an introduction to power regulators, switching regulators and linear regulators, hoping to be of great reference value to readers.

power regulator

The power supply voltage stabilizer is a power supply circuit or power supply equipment that can automatically adjust the output voltage. Its function is to stabilize the power supply voltage that fluctuates greatly and does not meet the requirements of electrical equipment within its set value range to make each circuit or electrical equipment It can work normally under the rated working voltage. The voltage stabilizer can be widely used in: industrial and mining enterprises, oil fields, railways, construction sites, schools, hospitals, post and telecommunications, hotels, scientific research and other departments of electronic computers, precision machine tools, computer tomography (CT), precision instrument test equipment, elevators Lighting, imported equipment and production lines and other places that require a stable voltage of the power supply. It is also suitable for users at the end of the low-voltage distribution network where the power supply voltage is too low or too high, and the fluctuation range is large, and the electrical equipment with large load changes. It is especially suitable for all places that require high power grid waveforms. The high-power compensating power regulator can be connected to firepower, hydraulic power and small generators.

switching regulator

A switching regulator is a type of voltage regulator that uses an output stage, which repeatedly toggles the "on" and "off" states, together with energy storage elements (capacitors and inductors) to generate an output voltage. Its voltage regulation is to adjust the switching according to the feedback of the output voltage. In a fixed frequency regulator, by adjusting the pulse width of the switching voltage - this is called PWM control. In a controlled oscillator or pulse-mode regulator, the width and frequency of the switching pulses are kept constant, however, the "on" or "off" of the output switch is controlled by feedback.

Depending on the arrangement of the switches and energy storage components, the resulting output voltage can be greater or less than the input voltage, and multiple output voltages can be generated with a single regulator. In most cases, under the same input voltage and output voltage requirements, Buck switching regulators are more efficient than linear regulators in converting power.

Pros: High efficiency (less power required for heat dissipation) Ability to handle higher power density topologies, results can be used to deliver single or multiple output voltages, and can be greater or less than the input voltage.

Disadvantages: high output continuous wave voltage, electromagnetic interference (EMI), short transient recovery time.

linear regulator

A linear regulator uses a closed feedback loop to bias the pass element to maintain a constant voltage at its output terminals. The op-amp drives the base of Q1 to ensure that the voltage at its inverting input is equal to the reference voltage at its non-inverting input

The op amp in this circuit has a small load, base current and minimal capacitive load so it responds very quickly to load changes.

Linear regulators are usually highly integrated, including pass elements and feedback loops. Some linear regulators are adjustable when used with an external resistor divider. The important parameters related to the linear regulator mainly include 4, which are as follows

1. Maximum Input Voltage: This is the maximum voltage that can be applied across the input terminals without damaging or damaging the device.

2. Input voltage-output voltage difference: Some adjustable linear regulators have a maximum input-output voltage difference rating.

3. Rated current: the maximum current that the linear regulator can provide. It depends on other factors such as input-output voltage difference, ambient temperature and heat dissipation. The power rating of a package indicates how much power the package can dissipate, which may depend on thermal and layout requirements.

4. Voltage drop: This is the minimum input-output voltage difference that the device can accept and produce a stable voltage.

The servo type voltage regulator is a device that stabilizes the output voltage. Voltage regulator with constant voltage regulator, control circuit, and Servo Motor and other components. When the input voltage or load changes, the control circuit samples, compares, amplifies, then drives the servo motor to rotate, causes the regulator Carbon Brush’s position to change, through the automatic adjustment coil turns ratio, thus maintains the output voltage stability.

Whenever it rains, a lot of friends are wondering: “heavy rain, many lighting equipment is still on, because the rain is too big, and the current instability? ” Since there may be some unexpected accidents, the power sector has long thought of these sudden problems,they will installed the voltage regulator in advance in some important sections of the road lighting equipment. In a city, the lights on the entire road are often powered by a line, when the night is coming ready to open, a large cur