What is the role of the TV high pressure bubble knob of the TV high pressure package

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. 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.

TV high voltage package.

The electron gun at the end of the CRT emits hot electrons and accelerates the bombardment of the phosphor screen by an electric field, and the fluorescent substance applied to the phosphor screen emits light. The faster the electron beam travels, the brighter it becomes. To increase the speed at which the electrons operate, it is necessary to increase the voltage of the accelerating electric field so that the electron beam can obtain higher accelerating energy.

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 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 effect is exactly the same in a TV set. It is used in TV sets to accelerate electronic screens to reach sufficient brightness, and is also used in computer LCD screens to power lamps to make the screen reach sufficient brightness.

Of course, the model of the high-voltage package in each TV is different, and the repairer should recognize the model when changing the high-voltage package of the TV. In this way, a series of unnecessary dangers can be avoided.

Early black-and-white televisions mostly used discrete line output transformers (commonly known as high-voltage packs). The common fault of this kind of output transformer is that the cylinder of the high-voltage packaging silicon pillar is ignited and arced, resulting in the breakdown and deterioration of the inner wall, but most of the coils are not necessarily damaged.

It is a high-voltage package, and its function is to turn the main power supply into a high voltage supply to the anode of the picture tube, accelerate the pole, and focus the pole line field scanning working voltage, so that the TV can display the image.

There are two knobs on the body of the common color TV high-voltage package, focusing and adjusting the potentiometer, and the acceleration pole adjustment potentiometer.

The high-voltage welding feet of the color TV are facing down, the upper one is the focus adjustment potentiometer, and the lower one is the acceleration pole adjustment potentiometer. Adjust the focus to make the image clear; Adjust the acceleration electrode voltage to adjust the brightness of the phosphor screen.

Konka High Pressure Pack JF0501-19519=BSC25-N3402K=BSC25-0146

The pin function is shown in the following figure:

The following are the parameters and functions of the high-voltage package function feet of some TVs:

67a 333=677 No. 124 38910 7 1 pin 190 6 pin 21 Changhong C2166 ABL 21 Changhong C2169

2 pin tube 114 112 7 pin 3 pin 4 pin 5 pin similar model AFC 8 pin floor l

B114V 112 9 feet 10 feet filament 18 Changhong C1861 21 Changhong C2161 21 Changhong C2165 18 Changhong C1863 21 Changhong C2162 21 Changhong C2167 18 Changhong C1864 21 Changhong C2163 21 Changhong C2168

69n 684 No. 123 45679 81 feet 2 feet 3 feet 4 feet 5 feet Tube 1156 feet Field 27 14 abl

B115V7 foot view amp 200

8 feet on the ground.

9 feet 410 feet filament.

- It may be a "high-voltage package", which is commonly known as the line output transformer in the TV or display, and its secondary coil raises the reverse voltage to more than ten or twenty thousand volts of high voltage, which becomes DC high voltage after internal high-voltage rectification, and supplies the high-voltage anode of the picture tube.

Sufficient voltage is supplied to the electron gun.

It is not called a high-voltage bubble, it is called a high-voltage cap, which is the output end of the reverse transformer, which supplies the high voltage of the picture tube.

The ** of the high-voltage electron beam.

The high-voltage package is used to generate high voltage, when the input pulse current is the output of the high-voltage end is direct current, including the acceleration end, the focusing end, and the high-voltage anode terminal, there are generally three coils, one input, one negative power supply, and one high-voltage group, what do you want to do, it depends on whether you need high voltage.

The high-voltage package is actually equivalent to a transformer, which uses the line frequency pulse to increase the voltage to supply the various high voltages required by the TV.

It is the role of the circuit itself to produce high voltage,TV must have high voltage to watch TV,Next to one is focus adjustment,One is accelerated adjustment,It's okay to accidentally twist it from normal,It's just that the image changes,It's not going to be,It's hard to say for other reasons,TV can't be turned on,That's the reason why the TV has other faults,It may be that the high-voltage line transistor is burned out,If you don't understand these,It's best not to be careful not to do it,Pay attention to safety,Send it for maintenance, Hope that helps,

Hello! One of the two is to adjust the brightness of the high voltage! You may turn the table down and there is no brightness! The other one is to adjust the clarity! It's about focusing the voltage! You just don't touch the conductive way! No problem.