Are you planning to buy an LCD TV? And, of course, you worry that power surges can cause harm. This is true to a greater extent, since our networks are not ideal. In this article, we will look at the effect of network fluctuations on TVs and how to try to avoid these troubles.

The Consumer Protection Law states that the TV is not included in the List of goods of good quality that are subject to return or exchange. When purchasing such expensive equipment as an LCD TV, you involuntarily think: “Maybe you should immediately buy a stabilizer?”

On the one hand: we all have fresh memories from childhood, when voltage-stabilizing devices stood next to the TV. On the other hand: why waste money, you can always find better uses for it.

What is a voltage stabilizer?

The name speaks for itself. This device is designed to maintain the stability of the output voltage during possible changes in the input voltage, as well as to protect against small surges and dips in the power supply network.

Which voltage stabilizer is preferable for a TV?

Many people choose the triac option. This design has no moving parts (brushes); it equalizes the voltage quite quickly. But we must not forget that the LCD TV is equipped with an autovoltage system. You can find out if your TV has a stabilizer built in by looking at the data sheet.

And, most likely, the question will come down to determining: how high-quality electricity is supplied to your home. You can track voltage fluctuations using a tester, preferably a pointer tester; a digital device does not show this so clearly.

We measured it and everything is fine. But is your soul somehow restless? Of course, you can buy a car stabilizer just for peace of mind. The choice is always ours!

Do you need a stabilizer for an LCD TV?

City electrical networks typically provide a much more stable power supply, and thus do not pose an electrical hazard to TVs. Therefore, no voltage stabilizer is required for the TV.

In rural areas, supply voltage can be unpredictable and power supply defects, including transient noise and sine wave distortion, are inevitable.

You need to buy a car stabilizer unless the power supply is stable: the voltage is too low or too high, the lamps blink for no reason, or something similar is observed. Such problems often occur in houses with old faulty wiring and emergency panels. In this case, the TV will operate in an extreme mode for itself, which can ultimately lead to its failure.

Selection by main characteristics

Look at the nameplate of the TV, perhaps you will learn a lot of information on it about the purchased equipment. A nameplate is a plate where the manufacturer places a record of the technical characteristics of the device.

Selection by phase

If a single-phase network is connected to the house, then, obviously, the stabilizer must also be single-phase. With a 3-phase network, you can buy a 220 V auto stabilizer for each phase, and they will still cost less than one three-phase one.

Selecting a power stabilizer

The main characteristic of a stabilizer is its power. It is calculated based on the power of the TV itself (approximately 100-400 W). In addition, it is recommended to buy devices with a 30% power reserve.

Precision stabilization for optimal protection

The stabilization accuracy of the electronic stabilizer is determined by the number of control stages and, depending on the model, can range from 7 to 0.5%. The TV is capable of operating normally with a voltage drop of 5-7%.

The advantage of stabilizers is their energy-saving adjustment mode. A distinctive characteristic of home devices for normalizing voltage is also their low level of noise generated during moments of stabilization.

It is better, of course, to give preference to devices from well-known manufacturers. They have fewer connectors and wires. Reliability, durability and affordable price - such criteria should be used to make a choice.

Buy a stabilizer at an attractive price and with a guarantee

If you choose a device only for your TV, then the prices are now quite reasonable. All equipment currently has an official warranty and certification from the manufacturer.

You can now buy a voltage stabilizer for a TV at an affordable price of good quality and reliability through an online store and with home delivery.

Many of us remember the time when, in order to watch a CRT TV, a small box was placed next door to protect it from voltage surges and impulse noise in the power supply network.
The era of EL “mammoths” is over, they were replaced by plasma and liquid crystal screens from well-known global manufacturers (Panasonic, Philips, Samsung, Sharp, Sony, Toshiba), and the need for voltage stabilizer still remains.
The consistently poor quality of our electrical networks negatively affects the performance of expensive and high-tech electronics.
Sudden changes, various impulses and interference in the electrical network significantly damage the “stuffing” of the equipment, shortening its service life and leading to expensive non-warranty repairs.
When purchasing a 3D LED or LED TV, you need to choose voltage stabilizer This becomes especially acute due to the increased sensitivity of these products to power surges.
The daily use by you or your neighbors of powerful household/construction electrical appliances (microwave ovens, kettles, hammer drills, etc.) certainly leads to the formation of destructive voltage surges and impulse noise.
Every second without high-quality protection, your TV is at risk; components such as a matrix, processor or tuner may fail.

How to “save” a TV from poor-quality electrical networks and save money?

The correct solution is definitely to use high-quality voltage stabilizer for TV.
Main function for which he is responsible voltage stabilizer , is the formation at the output of the permitted 220V-240V, which is completely safe for the TV.
Additionally voltage stabilizer cleans the input electricity from impulse noise, performing the function of a network filter, and at the moment of overload it is able to “smoothly” turn off the equipment.

Most of us are familiar with the situation of power surges in the network. Moreover, when it decreases, there is no need to worry about the equipment - it will simply turn off when it crosses the lower permissible limit. But with increased voltage, household appliances may fail. In the article we will consider what a stabilizer is, its types and characteristics, as well as the choice and necessity of using a voltage stabilizer for TV.

A stabilizer is a device that, in the event of an unstable input voltage, ensures that the output voltage is maintained within narrow limits. Its main task is to increase or decrease the existing intensity in the network to the level of 220 V or to turn off the power in case of a drop below 160 V or more than 255 V.

Stabilizing devices can be network-based – they are connected for a specific device. Or main ones - they are connected to the entire electric main that supplies the entire home.

If there are a large number of expensive household appliances, their owners often have questions about whether a voltage stabilizer is needed, what power it should be designed for, and what equipment to use.

Let's consider whether a stabilizer is needed for a TV, and which one should be chosen.

Do modern TVs need a stabilizer?

The question of voltage stabilization for TVs has been around since the times when TVs were tube-based, and as the voltage changed, the picture on the screen was distorted. Often after such failures it was necessary to repair equipment.

All modern TVs are divided into the following main types: LED, LCD and plasma. Their peculiarity is that they are equipped with a switching power supply. Such units can operate in a fairly wide voltage range from 170 to 250 V. If such values ​​are exceeded, the TV should turn off. If this does not happen, internal elements may burn out and then repairs will not be possible.

Some manufacturers, for example, LG and Samsung, produce specialized stabilizing devices. However, their cost significantly exceeds the cost of similar devices from other manufacturers.

And yet, is a voltage stabilizer needed for LCD or LED TVs?

If you constantly have power surges in your network, lights flash, and devices turn off, then in this case it is definitely worth installing a protective device. First you need to determine within what limits this happens. To do this, it is enough to measure the intensity level several times a day with a special tester.

Moreover, it may be better to install a stabilizing device on the entire apartment or house, which, of course, is quite expensive. But here we need to look at the circumstances. If equipment constantly has to be repaired, it is better to ensure network stabilization once, if its condition cannot be improved in any way.

The main stabilizer is installed as close as possible to the panel room, immediately after the meter

But such critical situations happen extremely rarely in urban electrical networks. This is more typical for rural areas. Therefore, there is usually no need to install a stabilization device, given its considerable cost. But if you are still worried about your equipment, but don’t know how to make a choice, it’s worth finding out what kind of stabilizing devices there are.

Another misconception is that pixels in TVs burn out due to increased voltage. Pixels are control transistors. And they can fail regardless of voltage. The same applies to a short circuit. If it does not occur in the device itself, then the power supply to the TV will simply stop, and the stabilizing device will not help in this situation. Moreover, this does not affect the operation of household appliances.

Types of stabilizers and their features

Stabilization devices must provide protection for household appliances from power surges. But first you need to understand what types of these devices exist in order to understand which ones are best suited for your purposes.

Networks can be single-phase (220 V) or three-phase (380 V). Accordingly, these devices can also be divided according to this principle. Three-phase ones are more often used in industry, but single-phase ones are sufficient for private houses and apartments.

Voltage stabilizers can be divided into the following types:

• Relay;
• Electromechanical;
• Triac;
• Double conversion.

Now about each of them in more detail.

Relays are the most affordable in the price segment, which is why they are often used. They are able to withstand not very high differences and quickly convert the output voltage. They wear out the faster the more often jumps occur. Can be noisy and have a short lifespan.

Electromechanical or servomotor stabilizers. They have better characteristics than the previous ones and a higher cost. This device is a transformer that independently regulates the voltage on the supply loop. Among the advantages it is worth noting:

• Wide input voltage range and no output distortion;
• Silence;
• Virtually insensitive to operating frequency.

The disadvantages include:

• Moving elements need to be replaced every few years, the servo drive of the brush block - a little less often;
• The stabilization speed is lower than that of relay ones;
• Single-phase ones can only work in heated rooms.

Triacs have a long service life and are quiet. They do not require special maintenance, but their cost is even higher than that of electromechanical ones. Very fast stabilization speed. At high temperatures they may fail.

The most expensive stabilization systems are double conversion. They are capable of converting alternating current into direct current and vice versa, that is, they work as inverter devices. Such stabilizers are perfect for equipment with high power up to 30 kW and sensitive to voltage surges. They are durable and quickly respond to changes in network intensity.

What to look for when choosing

How to choose a voltage stabilizer, and what parameters should be taken into account. First, you need to look at the power of the system. It should be 20-30% higher than the power of the device to which the connection will be made. If you plan to install a stabilizing device on more than one device, accordingly, all powers are summed up. And it is better to take a system that will exceed the received power by at least 3 times in order to be able to increase the connected equipment.

It should also be taken into account that some devices consume much more power when starting up than in operating mode. Their total power will consist of active and reactive components and is measured in kVA. If the instructions do not indicate anything, then the coefficient by which you need to multiply the active component will be about 0.7 (this will be the reactive part).

Secondly, the stabilization accuracy, that is, what the voltage spread will be at the output of the stabilizer. The instructions for household appliances usually indicate the permissible range, and you need to focus on it.

Single-phase or three-phase. If you have a three-phase network, or have an electric stove or similar high-power equipment, then you can install three-phase stabilizers. Or you can install three single-phase devices. In practice, it is more convenient to work with them and they will cost less than one 3-phase one.

A 220 volt stabilizer cannot be directly connected to a 380 volt network.

Stabilized voltage range. That is, the range of received voltage, beyond which the devices will be turned off.

In addition, these devices can be wall-mounted, floor-mounted, and differ in size and appearance. Here everyone chooses according to their preferences and financial capabilities.

Returning to the question about TVs, let’s summarize: is a voltage stabilizer needed for a TV and which stabilizer to choose for a voltage of 220 V.

Each type of stabilizer can be used in everyday life. Correlating cost and characteristics, the most suitable voltage stabilizer for a TV can be called relay and electromechanical.

To choose a good model for a smart or any other TV, you need to follow the criteria that are already described above and are important when choosing a stabilizer for any equipment. It doesn’t matter what TV model or type you have. Stabilizing devices are universal.

• For Led TVs that do not consume too much electricity, the Sven AVR-800 is well suited. Is relay;
• Energy SNVT-1500 – electromechanical type. Works fully automatically. Has smooth adjustment and thermal protection. Good for equipment sensitive to changes;
• DefenderAVR real 1000 is a budget relay option. It also acts as a surge protector. Suitable for long-term network load fluctuations.

To summarize, we can say that stabilizing devices are needed if there are constant surges in the power grid. In case of rare and minor changes, modern technology contains switching power supplies that can protect it from breakdown.

If you still decide to secure some equipment, for example, a TV, it does not matter its model or panel type, all stabilization devices are universal devices. What is important is the power of the equipment and the limits of stress that it can withstand.

The most suitable for individual units of household appliances are relay and electromechanical stabilizers.

Please note.

All modern electronics react very sensitively to voltage drops in the network, especially during moments of overloads and short circuits. Therefore, where such phenomena occur systematically, it is recommended to connect household appliances together with stabilizing devices. Do you need a voltage stabilizer for an LCD TV? There is no definite answer here; everyone makes their own decision. In any case, using a stabilizer will only bring benefits and protect an expensive TV in a dangerous situation.

Stabilizers with TVs: an excursion into history

During the Soviet Union, the population used exclusively tube televisions, which could only work normally in conjunction with a voltage stabilizer. These small televisions in a plastic or metal case had significant weight, heated up during operation, emitting a smooth, clearly audible hum.

Old TVs could theoretically do without a stabilizer, but even minor fluctuations in the voltage in the network led to noticeable changes in the image, distortion of pictures and other unpleasant consequences. Since such situations were repeated regularly, TV stabilizers were used everywhere, thus making it possible to obtain the required 220 volts.

The operating principle of such stabilizing devices was based on supersaturation of the transformer core, so each of them could only operate in one narrow power range. For example, black and white TVs worked with stabilizers designed for 100-200 W, while color receivers required more powerful devices.

That is, a weak load could not be connected to a powerful stabilizer. This led to a violation of the operating principle and the device simply stopped working. If a powerful load was connected to a weak stabilizer, it quickly began to overheat, and its body melted.

Features of modern TVs

All modern electronic devices, including LCD TVs, are equipped with their own, covering a wide range of input voltage. At the output of these devices, the voltage is stabilized to the required level and in this form is supplied to all components and elements of the TV.

Thus, televisions, including Samsung and Sony brands, manufactured after 2000 can easily do without a separate stabilizer. Sellers literally force expensive stabilizers on gullible customers, assuring them that without them the TV will not be able to work normally and will immediately burn out in an emergency.

A powerful argument from unscrupulous sellers is often the so-called burnout of pixels due to voltage surges and short circuits. But modern TVs are initially protected from such external influences. In such cases, the direction of the current simply changes, and the receiver itself must turn off after de-energizing. If the short circuit occurs inside the Led TV, then the stabilizer will not help at all.

Regarding burnt-out pixels, it is worth noting that they cannot fail on their own. The cause of the violation, as a rule, turns out to be the ones under whose control the entire pixel system is located. That is, pixels still fly out, and the number of such departures directly depends on the degree of reliability of the entire system.

How do LCD TVs behave when the voltage drops and goes beyond the standard limits?

If the readings are too low, the device will simply turn off without any consequences. After the voltage returns to normal, the TV turns on and operates normally.

The situation becomes more complicated when the voltage is too high. In this case, the one installed at the entrance breaks through and fails. As a result, a local short circuit occurs, accompanied by a blown fuse, loss of power and shutdown.

After a certain period of time, the varistor returns to its normal state, and the blown fuse is replaced. If such situations occur regularly, you can still use a stabilizer so as not to waste time restoring burnt elements.

Surge protector or UPS?

The problem of additional protection for an LCD TV can be successfully solved by using a high-quality surge protector. Its main function is to protect the network itself from high-frequency interference created by a switching power supply and disrupting the operation of other electrical appliances.

As for the uninterruptible power supply, if there are no problems with the power supply, there is no need to purchase this device. If there are frequent and regular outages, then it is recommended to buy.

Otherwise, constant exposure to powerful inrush currents when starting the TV after a shutdown will significantly reduce its service life and will ultimately lead to failure. For LCD devices, an inexpensive uninterruptible power supply with a power of 250 W is quite suitable, which will be sufficient for short-term power outages.

Or is it a stabilizer?

If you still decide to ensure the reliability and guaranteed protection of the TV, it is recommended to use double conversion stabilizers. They are much more efficient compared to mechanical and relay devices. The operation is based on the principle of an inverter, and the main advantage is the ability to convert alternating current into direct current and vice versa.

All conversions are carried out with high precision, which is ensured by the built-in microprocessor. The only significant drawback is the high cost of these devices.

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When the mains voltage in a house or country house begins to negatively affect the operation of household appliances, say that Do you need a voltage stabilizer for an LCD TV? It’s not even worth it, you need to buy it right away. All modern equipment that is used in everyday life, as a rule, has high power requirements. Deviations in network parameters, in the form of voltage surges and drops, can lead to disastrous consequences for an electrical appliance, as a result of which it can simply burn out.

Let's say you use a Samsung UE40KU6000K LCD TV with a diagonal of 40″ (102 cm) at a price of 31,500 rubles. In this case, of course, it would be more correct to install it not expensive stabilizer for lcd tv, for example, the cost of which is 2600 rubles. Which will cost you many times less than buying a new household appliance.

Which is the best voltage stabilizer to buy for an LCD TV?

As we have already said, choosing a stabilizer depends on the cost of the household device. And most often these are network regulators and operating principles. Of course, if your task is to protect only one specific electrical appliance. If, in addition to the TV, you need to connect a refrigerator, washing machine, or computer, then you can consider a model of an electronic stabilizer, such as.

In contrast, they are slightly cheaper in price, but have a higher output voltage error. The former have from 6 to 10%, the latter 3%. But regulators with step adjustment are capable of operating in rooms with low temperatures, down to -30 degrees. Thus, if you want to go to the country, then the best option would be relay voltage regulator.

How much power is needed for a voltage stabilizer for an LCD TV?

To protect LCD TV brand LG, Samsung, Panasonic, Philips, Sharp, Toshiba, diagonal: 14″ (37cm), 20″ (51cm), 21″ (54cm), 25″ (63cm), 29″ (72cm), 32″ (81cm), 34″ (87cm), 36″ (92cm), a 220V voltage stabilizer for 500 and 1000 W is quite enough. This device is equipped with a socket and has a fairly compact appearance. This will allow you to install the device close to power supply household equipment.

Also, if you need a more powerful model, it will be a good buy stabilizer with built-in surge protector, its price is 2500 rubles.

The brand store “stabilizatory-ru” offers at an inexpensive price, with delivery throughout Moscow, St. Petersburg and other cities of Russia. From a Russian manufacturer ETC "Energy".