What does the degaussing rod do and how to degauss a computer?

The magnetization phenomenon of the display is a relatively common phenomenon in the failure of the display, and the degaussing rod can remove the "color spots" and restore the original appearance of the display.

The degaussing rod is the application of the principle of magnetic induction, through the geometric center of the alternating current ** circle in the coil to generate an alternating magnetic field, the cathode of the display is demagnetized, so as to achieve the purpose of degaussing. When using, hold the degaussing rod in front of the monitor screen, take the center of the screen as the center of the circle, make a circular motion with a radius gradually enlarged, at the end, place the degaussing rod in the center of the screen, and make it at an angle of 90 degrees with the surface of the screen, keep it vertically and slowly retreat to 1m away from the display, then turn off the power and turn on again. Take a closer look at the degaussing effect.

If the effect is not good, it can be repeated until the abnormality caused by magnetization of the display is completely eliminated. Degaussing rods are sold in the general electronic market, and for friends with DIY spirit, you can try to make one yourself. The degaussing rod is simple to make, as long as you pay attention to the details, the effect of the degaussing rod is still very good.

The materials to be prepared for the self-made degaussing rod are: 2 3 meters of enameled wire, a round plastic frame, insulating electrical tape, and insulating rod. Wrap the enameled wire parallel to the round plastic frame.

After the winding is completed, the insulating electric tape is wrapped and pasted on the circular plastic frame, and the surface of the circular plastic frame and the enameled wire must be pasted to fix the plastic frame and the enameled wire together. Next, place one end of the insulating rod on one side of the fixed round plastic frame and fix it with insulating electrical tape. Finally, connect the wire ends of the enameled wire in series to the resistors of household appliances with large loads, such as electric stoves, heaters, or rice cookers.

The purpose of connecting the degaussing rod in series on a large load appliance or a special resistor is to reduce the current intensity of the degaussing rod in use to reduce the heat generation. Otherwise, when the degaussing rod is used, its heat generation is extremely large, and it is easy to burn through the insulation layer of the enameled wire, resulting in a short circuit. When using, the large-load electrical appliance is connected to the mains, and the current in the degaussing rod will generate a magnetic field next to the degaussing coil, and the user holds the insulating rod without connecting with the degaussing coil at one end to degauss the display.

If the degaussing effect is not obvious, the solution is to increase the number of turns to wrap the enameled wire. If conditions permit, a thermistor can be connected in series in the degaussing coil circuit, so that when the degaussing coil is working, the current value will be automatically adjusted according to the working temperature to ensure the safety of use.

Categories: Computer, Networking, >> Hardware.

Problem description: I often hear about computer degaussing and the like, but I don't know what this is? How can a computer be magnetic? Why do you want to remove this magnetism?

Analysis: This degaussing mainly talks about CRT displays.

The imaging principle of CRT displays is that the CRT emits a stream of particles that hit the phosphor screen to emit light.

In the process of the particle telling flight, if it is disturbed by magnetic force, the impact position will be inaccurate.

The picture we see is distorted.

Magnetism is conductive, as if rubbing an iron nail on a magnet can exert a magnetic force on other iron nails.

Degaussing is the removal of this magnetism from the inside of the display.

The magnetism of the display is mainly ** speakers (although the speakers are now magnetically shielded, but there will be some) Magnets in life (keychains, jewelry) Earth magnetic field (long-term east-west display may produce picture shifts because it is affected by the north-south magnetic field).

What are you asking, I don't understand.

1How to use the TV degausser.?

After powering up, slowly rotate in circles on the magnetized part of the screen, and slowly move away from the screen for a minute or two.

What is a degausser?

If the magnet is magnetic, it cannot be magnetic; If you are an ordinary magnet, using a degausser, you can weaken the magnetism, but it is also not clean.

How to use the degaussing function that comes with the monitor.

Please use the degaussing button or function marked with DR on the front panel of the display nucleator. If there is no degaussing function, it can be degaussed by repeatedly turning on and off. If the degaussing circuit inside the display discriminator is faulty or the magnetization is severe, the display should be repaired first and a special degaussing device should be used to degauss the display.

How to make a magnetizer (magnetizer, degausser) and schematic diagram of the screwdriver.

The magnetizer works by charging the capacitor with a DC high-voltage voltage and then discharging it through a coil with very little resistance. The peak of the discharge pulse current can reach tens of thousands of amperes.

The structure of the magnetizer is relatively simple, in fact, it is a magnet with a strong magnetic force, equipped with a variety of shapes of iron, as an additional magnetic pole, in order to form a closed magnetic circuit with the magnetized body, when magnetizing, the additional magnetic pole is arranged, and the magnetized body, as long as the excitation current is added, the brush can be completed instantly.

Degaussers are a little more complicated. Demagnetizer, that is, demagnetizer, can be divided into pulse demagnetization and AC demagnetization. The two most important conditions for demagnetization:

a) Magnetic pole overlap (method: alternating current is used for magnetizing current; alternately change the direction of direct current; change the direction of the specimen in the magnetic field).

b) decreasing magnetic induction intensity (method: the specimen fades away from the magnetic field or the magnetic field fades away from the specimen; Current attenuation or step-down is controlled by the power supply).

If you want to draw the schematic diagram, you should be able to draw it according to the above, and if you have a magnetizer, you can draw a magnetic circuit, and as for the degaus......ser, you should be able to draw itI couldn't help ......

The term degaussing can only be used for CRT displays on color TVs or computers.

1. If the display screen is magnetized, it is characterized by uneven color spots on the screen;

2. For the inside of the display, the components in the degaussing circuit are damaged, and the normal degaussing can be restored by simply opening the display to replace the damaged components;

3. Or turn on the power of the display, and use a degaussing coil to move the magnetized part (color spot) to demagnetize.

When the magnetized material is affected by external energy, such as heating and impact, the magnetic distance direction of each magnetic domain will become inconsistent, and the magnetism will weaken or disappear, and a common method is to place the material with magnetism in the AC magnetic field, and gradually weaken the AC magnetic field strength until it disappears, and the material is demagnetized. For example, CRT picture tubes.

You can remove the magnetism of metal by finding a piece of iron that is hollow in the middle and not affected by magnetization, standing it on the table, and placing it next to the metal object.

Heating this magnetic metal can also remove magnetism, or buy a special degausser.

Degausers usually use an electromagnet with an unclosed core and an alternating current of 50 Hz. In degaussing, the demagnetized object is first brought close to the demagnetizer to saturate the magnetism, and then gradually leaves, so that the hysteresis loop gradually shrinks until the remanence is eliminated. The damping oscillation current can also be passed into the coil of the electromagnet to make a demagnetizer.

With this degausser, the demagnetized object does not have to move away gradually.