新普京集团电子游戏网址(中国)有限公司

Link: https://kdocs.cn/l/cf91xMU6Oqgl

In the process of TV's development towards intelligence, large screen and high end, some problems that affect TV quality also appear, such as serious electromagnetic interference (EMI). Nowadays, TV faces various forms of EMI challenges: the interference between different components in the equipment; Radiation interference from other household appliances (such as refrigerators, induction cookers, microwave ovens, etc.); Interference of wireless communication signals (such as WiFi, Bluetooth, etc.); And interference caused by sudden changes in voltage or current in the power supply network. How to solve the electromagnetic interference (EMI) of TV has become an increasingly serious issue.

When it comes to electromagnetic interference (EMI), we can't do without our electromagnetic devices. So far, what electromagnetic devices can solve the electromagnetic interference (EMI) of TV? This paper introduces magnetic beads to you-a good helper to solve the electromagnetic interference (EMI) of TV. It can effectively suppress high-frequency noise and peak interference, thus enhancing the stability and quality of TV signals. In addition, magnetic beads can improve electromagnetic compatibility (EMC) to ensure that TV equipment is not affected by external electromagnetic interference.

Application principle of magnetic beads

The main component of magnetic beads is ferrite, which has the characteristics of high resistivity and permeability. When high-frequency current flows through the magnetic beads, the magnetic beads will show high impedance characteristics, absorb high-frequency signals and convert them into heat energy to release, so as to suppress high-frequency noise and peak interference. At low frequency, however, the impedance of the magnetic bead is relatively low, which has little obstruction to the current and behaves like a wire, allowing the low-frequency signal to pass smoothly without significant attenuation.

In the application of EMI filtering of TV's main power supply, inter-power supply and low-frequency signal interaction circuit, it is suggested to use Xiangru Electronic's six-hole magnetic bead XRR6H-6*10-3.0T to eliminate high-frequency interference. Its main advantages include:

Efficiency: It can effectively absorb and suppress high-frequency noise in a wide frequency range (such as 500Ω@25MHz, 700Ω@100MHz).

Reliability: Six-hole magnetic beads are made of high-quality materials and combined with advanced manufacturing technology to ensure the stability and reliability of products.

Ease of use: Six-hole magnetic beads are compact and easy to install, and can be easily integrated into various electronic devices.

Multifunctional: It can be used in many fields, such as industrial control equipment, medical equipment and so on, in addition to consumer electronic products such as televisions.

To sum up, UHF signals can be effectively absorbed and processed by using the high resistivity and permeability characteristics of six-hole magnetic beads. In radio frequency circuits, PLI circuits, oscillation circuits and circuits containing UHF storage devices of TV, adding six-hole magnetic beads to the power input part can reduce high-frequency noise and interference. This measure is not limited to TV, but also suitable for computers, audio systems and other electronic equipment. Six-hole magnetic beads can be used to improve performance in any part that may exist or be disturbed by high frequency.

Schematic diagram of application of six-hole magnetic beads in power supply scheme (LFB)

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