How does a voltage regulator work, and how does a voltage regulator work?

A voltage regulator is a device that stabilizes the output voltage. The voltage regulator consists of a constant voltage regulator, a control circuit and a servo motor. When the input voltage or load changes, the control circuit sampling, compares, 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 remains stable. Scope of application: The 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, precision machine tools, CT, precision instruments, testing equipment, elevator lighting, imported equipment, production lines and other places that need stable power supply voltage.

It is also suitable for the end users of the low-voltage distribution network with a large fluctuation range and a large range of power supply voltage, as well as electrical equipment with large load fluctuations, especially for all places with high requirements for power grid waveforms. The high-power compensation type power stabilizer can be connected with thermal power, hydropower, and small generators. What it does:

A voltage regulator is a power circuit or device that automatically adjusts the output voltage. Its function is to stabilize the power supply voltage that fluctuates greatly and cannot meet the requirements of electrical equipment within its set value range, so that various circuits or electrical equipment can work normally under the rated working voltage. First, the power conditioner stabilizes the voltage by jumping the relay.

When the grid voltage fluctuates, the automatic correction circuit of the power conditioner is activated, so that the internal relay acts. Forcing the output voltage to stay near the set value, this type of circuit has the advantage of being simple and the disadvantage of low voltage regulation. Every time the relay jumps and shifts gears, the power supply is interrupted instantaneously, resulting in spark interference.

This greatly interferes with the reading and writing work of computer equipment, and is easy to cause computer error signals. In severe cases, the hard drive can be damaged. High-quality small voltage regulators mostly use the motor to drag the carbon brush to stabilize the voltage, which has little interference to electrical equipment and relatively high voltage stabilization accuracy.

According to. Adjust the tube.

The state of work, we often put.

Regulated power supply. Divided into two categories:

Linearly regulated power supply.

And. Switching regulated power supply.

Switching power supplies. The switch tube (in the switching power supply, we generally call the adjustment tube the switch tube) is working in two states: open - the resistance is very small; Off – The resistance is very large.

Switching power supply is a relatively new type of power supply. It has the advantages of high efficiency, light weight, voltage up and down, and high output power. However, because the circuit works in the switching state, the noise is relatively large.

Actual circuitry. Medium for the triode or.

MOSFETs, freewheeling diodes.

d, energy storage inductor l, filter capacitor.

c. When the switch is closed, the power supply supplies power to the load through the switch k and the inductor l, and stores part of the electrical energy in the inductor l l and capacitor c. Due to the self-inductance of the inductor L, after the switch is turned on, the current increases relatively slowly, that is, the output cannot reach the power supply voltage value immediately.

After a certain period of time, the switch is disconnected, and due to the self-inductance of the inductor L (it can be more vividly considered that the current in the inductor has an inertial effect), the current in the circuit will remain unchanged, that is, it will continue to flow from left to right. This current flows.

Overload. From the ground wire, it flows to the positive end of the freewheeling diode D, passes through the diode D, and returns to the left end of the inductor L, thus forming a loop. Pass.

Control switches. The time of closure and disconnection (i.e., PWM-

Pulse width modulation, the output voltage can be controlled. If the on/off time is controlled by detecting the output voltage to keep the output voltage constant, the purpose of voltage regulation is achieved.

How does a voltage regulator work? A voltage regulator is a device that stabilizes the output voltage. The voltage regulator is composed of voltage and constant voltage, control circuit, and servo motor.

When the input voltage or load changes, the control circuit sampling, compares, amplifies, and then drives the servo motor to rotate, so that the position of the carbon brush of the voltage regulator changes, and the coil turns ratio is automatically adjusted, so as to keep the output voltage stable. Scope of application: Voltage regulators can be widely used in:

Electronic computers, precision machine tools, computed tomography (CT), precision instruments, test devices, elevator lighting, imported equipment and production lines of industrial and mining enterprises, oil fields, railways, construction sites, schools, hospitals, posts and telecommunications, hotels, scientific research and other departments require stable voltage of power supply. It is also suitable for users at the end of the low-voltage distribution network with low or high power supply voltage and large fluctuations and large load changes, especially for all regulated power places with high requirements for power grid waveform. The high-power compensating power regulator can be connected to firepower, hydropower, and small generators.

Function introduction: The voltage regulator is a power supply circuit or power supply equipment that can automatically adjust the output voltage, and 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, so that various circuits or electrical equipment can work normally under the rated working voltage. The original power regulator stabilized the voltage by the runout of the relay.

When the grid voltage fluctuates, the automatic correction circuit of the power regulator is activated, so that the internal relay acts. Forcing the output voltage to be kept near the set value, this circuit has the advantage of simple circuit, but the disadvantage is that the voltage regulation accuracy is not high, and every time the relay jumps and shifts, it will cause an instantaneous interruption of the power supply and spark interference. This interferes greatly with the reading and writing work of computer equipment, which is easy to cause error signals in the computer, and in serious cases, it will also damage the hard disk.

High-quality small voltage regulators, most of which use the motor to drag the carbon brush to stabilize the voltage, this kind of voltage regulator has little interference to electrical equipment, and the voltage stabilization accuracy is relatively high.

When the input voltage or load changes, the control circuit sampling, compares, amplifies and then drives the servo motor to rotate, so that the position of the carbon brush of the voltage regulator changes, and the output voltage is kept stable by automatically adjusting the ratio of coil turns. The voltage regulator with a large capacity also works on the principle of voltage compensation.

Voltage Regulator Product Classification: Auto-coupled--- uncompensated regulated power supply (single-phase, three-phase 9KVA and below) has a small capacity and a voltage output of 110V. Compensated --- compensated regulated power supplies (single-phase 5kVA vertical and above, three-phase 15kVA and above) have a compensating transformer and no 110V output.

The function of the voltage regulator is to stabilize the voltage, when the voltage is high, it will come down, and when the voltage is low, it will rise again. When buying a voltage regulator, it is recommended that you choose a voltage regulator that is three times more powerful than the actual power, because the voltage regulator has to overcome the surge shock of the mains power and the starting shock of inductive loads (such as refrigerators, air conditioners, motors, and electric motors}) in actual work

When purchasing a voltage regulator, the rated output regulator should have a larger margin than the adapter automatic regulator. Check the appearance quality and processing technology.

Buttons, switches and other operations should be flexible and reliable, parts should not be loose and shake the parts, there should be no rolling sound in the machine, otherwise there are foreign objects in the machine.

Reasonably select the total rated output of the automatic voltage regulator, the total total power of household appliances 3.

The shape and structure of the automatic pressure regulator are table-top, wall-mounted, wall-mounted and floor-mounted, etc., and different styles should be selected according to the location of the installation, the main purpose, and the installation capacity.

A voltage regulator is a device that stabilizes the output voltage.

When the input voltage or load changes, the control circuit sampling, compares, amplifies and then drives the servo motor to rotate, so that the position of the carbon brush of the voltage regulator changes, and the output voltage is kept stable by automatically adjusting the ratio of coil turns. The voltage regulator with a large capacity also works on the principle of voltage compensation.

Because some electrical appliances contain coil components, eddy currents that hinder the current will be generated in the early stage of power-on, and the generation of eddy currents will not only weaken the instantaneous voltage when the electrical appliance is started, resulting in slow start-up, but also strengthen the instantaneous voltage generated after the circuit is broken, which may cause sparks to damage the circuit.

Security matters

1. When the stabilized power supply is powered on, please do not disassemble the stabilized power supply or pull the input and output wires of the stabilized power supply to prevent electric shock or other electrical safety accidents.

2. The input and output connections of the regulated power supply must be reasonably arranged to prevent trampling and wearing, resulting in leakage accidents.

3. The stabilized power supply must be reliably grounded, and the user shall be responsible for the electric shock or personal injury caused by the operation of the non-grounding wire.

5. The input and output connections of the stabilized power supply should be checked regularly to avoid loosening or falling off, which will affect the normal use of the stabilized power supply and the safety of electricity use.

The above content refers to Encyclopedia - Voltage Regulators.

A voltage regulator is an electronic device whose purpose is to provide a stable operating power supply voltage to an electrical product. Generally, rectification and filtering are used to suppress sudden voltage fluctuations during power supply.

If the voltage is unstable, a voltage regulator will be used, so that the output voltage will not be high and low!

Voltage regulator principle: when the input voltage or load changes, the control circuit sampling, comparison, amplification, and then drives the servo motor to rotate, so that the position of the carbon brush of the voltage regulator changes, and the coil turns ratio is automatically adjusted, so as to keep the output voltage stable.

A voltage regulator is a device in electronic engineering that is designed to automatically maintain a constant voltage. A voltage regulator may be a "feed-forward" design of a Jane Traveler single, or it may contain a negative feedback control loop. Voltage regulators may also use electromechanical mechanisms or electronic modules.

Depending on the design, voltage regulators can be divided into DC regulators and AC regulators. Voltage regulators are often used in power supply systems, working with rectifiers, electronic filters, etc., to provide stable output voltages, such as the working voltages required by microprocessors and other components. At.

The working principle of the voltage regulator is to use the voltage regulation of the circuit and the control of the circuit to control the incoming current.

The voltage regulator refers to the device designed to automatically maintain a certain voltage in the rubber and hidden beam hall of electronic engineering. Regulators may contain a simple "feed-forward" design or negative feedback control circuitry. Voltage regulators may also use electromechanical mechanisms and electronic modules.

Depending on the design, voltage regulators are divided into DC stabilized and AC stabilized. Voltage regulators are often used in power supply systems, working in tandem with rectifiers, electronic filters, etc., to provide stable output voltages such as industrial and information slag voltages required by microprocessors and other components.

When the input voltage or load changes, the control circuit sampling, compares, amplifies and drives the servo motor to rotate, so that the position of the carbon brush of the regulator changes by automatically adjusting the ratio of the turns of the coil to keep the output voltage stable. Regulators with large capacitance can also operate under the principle of voltage compensation.

Day-to-day considerations for voltage regulators

1. Avoid violent vibration, prevent the flow of corrosive gases and liquids, prevent irrigation and place in a ventilated and dry place, and do not cover the fabric to obstruct ventilation and heat dissipation.

2. Please use a three-plug (grounded) socket, and the grounding screws on the machine should be properly grounded, otherwise the case will be charged with a voltage tester, which is caused by the distributed capacitance induction, which is a normal phenomenon and can be eliminated by the grounding wire. If the chassis is seriously leaking, and the insulation resistance is less than 2m, it may be that the insulation layer has been damp or the line is short-circuited with the chassis.

5 The low-power regulator uses the fuse for over-current and short-circuit protection, and 2 40KVA regulator functions as the DZ47 circuit breaker for over-current and short-circuit protection.

4. When the output voltage exceeds the protection value (the phase voltage protection value is adjusted to 250V 5V at the factory), the stabilized power supply will be automatically protected, and the output voltage of the stabilized power supply will be cut off, and the overvoltage indicator light will be on, and the user should immediately shut down to check the grid voltage or voltage stabilization. If the voltage regulator is automatically powered off (with input but no output), check whether the mains voltage is higher than 280V. If it is below 280V, check whether the regulator is faulty.

Wait until the cause is found before using it.

The above content refers to Encyclopedia - Voltage Regulators.