The structure of the TV high voltage package, the principle and structure of the color TV high volta

The high-voltage package of the display is basically the same working principle as the TV, and its main role is to generate anode high voltage, and provide various voltages such as focusing, acceleration, and gate. Note that the energy provider of the deflection current is not the high-voltage packet, but the S correction capacitor, when the line tube is cut-off, the B+ voltage is charged to the S capacitor through the high-voltage package and the deflection coil, and the current only passes through the high-voltage packet. Due to the high voltage package working in the state of high temperature, high frequency, high voltage and high current, coupled with the influence of factors such as humidity or dust in the external environment, the probability of damage to the high voltage package is high.

2. Causes of high-voltage package damage:

1. Breakdown of high-voltage filter capacitors in the package.

2. The high-voltage coil in the package is short-circuited between turns.

3. Leakage or breakdown of the high-voltage silicon stack in the package.

4. The primary coil in the package is short-circuited.

5. The focusing component in the package is aging, so that the focusing and acceleration voltage are unstable.

6. The insulation performance of the package body decreases, so that the high-voltage package is ignited internally or externally.

The high-voltage package is the most important component of the electrical appliance of the display device, which provides various voltages required by the picture tube, and some also provide pulse signals required by other circuits.

The line frequency current is boosted, and then rectified into a high-voltage direct current of about 20000V through multiple diodes and capacitors, and the structure diagram is used to attract the electron beam emitted by the picture tube electron gun to ensure that the electron beam can be effectively hit on the screen for imaging. The reason why such a high voltage is generated is because the screen must have enough brightness, the faster the electronic movement, the higher the brightness, so the larger the screen, the higher the voltage.

If your TV only has sound and does not display images, the repairman will tell you that there is a problem with the high voltage pack of the TV. If there is a sudden hissing sound on the TV, accompanied by an open flame, it is also because of a problem with the high-pressure pack. What is the accessory in the TV with the high-voltage pack?

What is the role of the high-voltage pack in the whole TV display? Next, I will introduce to you the role of the TV high-voltage package.

The high-voltage package of the TV is one of the factors that determine whether the brightness of the TV is displayed normally. We see that the TV picture is bright and dark, and the problem of abnormal brightness can be solved by replacing the new TV high-voltage package. Maybe you have to ask what does the high-voltage pack have to do with brightness?

The brightness of the TV is produced by the current hitting the fluorescent rubber powder particles, and the current hitting the phosphor is the high-voltage current output after the high-voltage package is converted. In other words, the high-voltage package in the TV is like a small high-voltage transformer in Liang Shizhou, which instantly presses the 220V AC power supply to output high-voltage direct current, and the direct current strikes the electronic movement and hits the phosphor to emit bright light in a row.

The TV high-voltage package is only used in the phosphor screen TV, and the high-voltage package does not exist in the LCD TV, because the LCD TV does not rely on the regurgitation to hit the phosphor to produce brightness. Now LCD TVs have become popular,Old-fashioned black and white、Color screen TVs have gradually withdrawn from the TV market,But some parts of some old TVs are still intact,It's a pity to sell them as scrap。 Does the high-pressure pack removed from the old TV have any other purpose?

High voltage direct current will be used in many places in life,If we can install the high-voltage package to the appropriate position,We can well realize the role of the TV high-voltage package。

Each model of TV should be installed with the corresponding model of high-voltage package, after the high-voltage package is damaged, it is easier to replace the operation, and it is more difficult to match the type. A functioning high-pressure pack removed from an old TV is able to regenerate residual heat on a TV of the same model. The old TV high-voltage package can also make an electric ignition circuit, which uses the high-voltage direct current output of the TV high-voltage package for ignition.

This electric ignition circuit can be applied to motorcycles and other motor vehicles. Some friends also use the destructive power of the high-voltage package when it outputs the high-voltage direct current point to make homemade small equipment such as mousetraps and rabbit traps.

The TV high-voltage package can also be used in many ways, but there are a few things to keep in mind when modifying the high-voltage package. First, the damaged high-voltage package needs to be discharged before it is disassembled. Do not do anything before discharging, otherwise you may be hit by high voltage.

The second is to use high-pressure packs in dry and dry environments. Because dust and moisture can easily cause the phenomenon of high-pressure bag ignition.

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TV high voltage packageIt is a very important component, if the TV high-voltage package is damaged, it will affect the normal operation of the TV, and it is necessary to master the correct method to replace the new high-voltage package of the TV, so what is the high-voltage package of the TV? How to replace the high-voltage package of the TV? Below we will give you a detailed answer, I hope you can help after reading it.

What is a TV High Voltage Pack?

The high-voltage package is commonly known as the line output transformer, and the output of high-voltage direct current is the role of the high-voltage package. This is exactly the same as the high-voltage pack in a TV. When used in televisions, it is used to accelerate the electronic screen to achieve sufficient brightness, and when it is used in computer LCD screens, it can supply power to the lamp tube to make the screen reach sufficient brightness.

Early black-and-white televisions mostly used discrete line output transformers (commonly known as line packs). The common fault of this kind of line output variable Zen state pressurizer is that the cylinder of the high-pressure packaging silicon column is ignited and arced, which is easy to cause the inner wall to break down and deteriorate, but most of the coils are not necessarily damaged.

How to replace the high-voltage package of the TV?

The model of the high-voltage package in each TV display is different, and the repairer should pay attention to the model when changing the high-voltage package of the TV. In this way, a series of unnecessary dangers can be avoided.

Turn off the power of the TV, use the table pen of the multimeter (you can also make one according to the same) to discharge the high-voltage bag, because after the TV is turned off, there will be part of the residual high voltage, first connect the metal needle at the short end of the watch pen to the ground wire on the side of the picture tube, and then hold the plastic part of the watch pen, and insert the watch needle between the high-voltage bag and the picture tube for discharge.

Pull up one side of the high-pressure bag left and right, and use the needle-nose pliers to clamp the spring clip with your right hand and pull it out obliquely from the side where the high-pressure bag is pulled. Weld off the high-voltage wire and clamp from the high-voltage pack, remove the high-voltage pack, thread the high-voltage wire into the new high-voltage pack, and weld it to the clip.

A layer of insulating silicone grease is applied to the circumference of the high-voltage nozzle edge of the picture tube 2-3 cm to prevent moisture ingress and leakage in the future. In the reverse order of removing the high-pressure pack, the high-pressure pack, together with the clamp, is loaded into one side at an angle, and then pushed in on the other side of the clamp between the pliers. Rotate the high-pressure bag left and right and press it tightly, so that the clip is in full contact with the high-pressure nozzle.

After removing the discharged grounding wire, check that it is correct, and then use it.

The above is to bring you what is the electric hand type video high voltage package? How to replace the high-voltage package of the TV such as Heshuyuan? All of it.

Kiss! The high-voltage pack of an old-fashioned television set is an electronic component that raises a low voltage above tens of thousands of volts, and is often used in power supply circuits. Older TVs have been phased out due to the widespread use of technologies such as sail liquid crystal displays and LED backlights in modern TVs.

However, as an electronic component, the high-voltage package still has some wonderful uses, such as: 1Laboratory Teaching:

The high-voltage package can be used for laboratory teaching, such as high-voltage arc experiments, electrostatic experiments, etc., so that students can better understand the principles of electricity. 2.Make insecticidal lamps:

The high-voltage package can be combined with fluorescent tubes to make insecticidal lamps, and the high voltage is used to decompose the air into oxygen ions, nitrogen ions and free radicals, etc., and the ultraviolet rays are produced to kill insects. 3.Making a sterilizer:

High-pressure packs can be used to make sterilizers, which use high voltage to convert oxygen molecules in the air into ozone, thereby killing bacteria and viruses. It should be noted that when using the high-voltage package, it is necessary to pay attention to safety and avoid problems such as electric shock and short circuit. It is recommended to follow safe operating practices such as wearing insulated gloves and using insulated tools.

The correct name of the high-voltage package: the line output transformer, some people call the line package or line transformer, its main role in the display TV is to generate anode high voltage, and provide focus, acceleration, G1 and other voltages.

The hot electrons emitted from the high-voltage output terminal of the high-voltage package (high-voltage cap copper sheet) to the electron gun in the picture tube bombarded the phosphor on the screen, and the fluorescent substance will emit light. The greater the velocity of the electron, the greater the brightness. To increase the speed at which electrons travel, only an electric field that attracts positive and negative attracts each other can be established.

The alternating current output in the high-voltage packet is rectified to establish a high-voltage electric field with the positive electrode in front, and the electrons are accelerated in this electric field, and the image has sufficient brightness.

The output of high-voltage direct current is the function of the high-voltage packet. After the high voltage pack is damaged, it will not be able to display the image with sound, and individual TV brands will not be able to work properly. It is called three nos, no pictures, no sounds, and no displays.