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Magnetic gas background The scientific community has debated for decades whether Fermion may have strong magnetism in the gaseous or liquid state, and the MIT research has given an exact answer. Keitler, a physics professor and research team leader at the school, stated that this discovery is very important and will advance people's understanding of the physical phenomenon of magnetism. Magnetic materials have significant application value in data storage, nanotechnology, and medical diagnosis.The announcement said that if this discovery is confirmed, it will rewrite the description of magnetic theory in physics textbooks, indicating that Fermion gas does not need crystal structure to have strong magnetism. Scott Prickard, a professor of physics at the Massachusetts Institute of Technology and another research leader, pointed out: "Our evidence is very convincing, but it is not an easy task to fully prove that (gases have strong magnetism). We did not observe how the atoms point to the region. These atoms: 19

2023-07

Magnetic gas The latest answer given by scientists at the Massachusetts Institute of Technology in the United States is that "magnetic gases" can be created through refrigeration technology. Scientists found that when the temperature drops to 0.00015 degrees Celsius from Absolute zero, the gaseous lithium atoms can show their magnetic properties.In essence, the laser is to keep the atoms still and reduce the Thermal motion of the atoms, thereby reducing the temperature of the gas. After the initial expansion of lithium gas clouds, they begin to contract. After the laser is turned off, the contraction has the speed of expansion, indicating that the lithium atoms have become magnetic.From a holistic theoretical perspective, this is very important as it provides us with an easy to understand magnetic property on the smallest possible scale.This experiment does not imply scientific achievements, but rather theoretical breakthroughs that will have the most practical impact. In the field of data storage,: 19

2023-07

Differences in magnetic inductance 1. Chip inductor: Inductive components and EMI filter components are widely used in PCB circuits of electronic devices. These components include chip inductors and chip magnetic beads. The following describes the characteristics of these two devices and analyzes their common and special applications. The benefits of surface mount components lie in their small packaging size and the ability to meet actual space requirements. Except for differences in impedance value, current carrying capacity, and other similar physical characteristics, the other performance characteristics of through hole connectors and surface mount devices are basically the same. In situations where chip inductors are required, they are required to achieve two basic functions: circuit resonance and choke reactance. Resonant circuits include resonance generation circuits, oscillation circuits, clock circuits, pulse circuits, waveform generation circuits, and so on. The resonant circuit also includes a high Q bandpass: 19

2023-07

Principle of Magnetic Beads FerriteBead is a rapidly developing anti-interference component that is cheap, easy to use, and has a significant effect on filtering high-frequency noise.The main raw material of magnetic beads is ferrite. Ferrite is a kind of Ferrimagnetism material with cubic lattice structure. The ferrite material is iron magnesium alloy or iron nickel alloy, and its manufacturing process and mechanical properties are similar to ceramics, with a gray black color. A type of magnetic core commonly used in electromagnetic interference filters is ferrite material, and many manufacturers provide ferrite materials specifically for electromagnetic interference suppression. The characteristic of this material is that it has very high high-frequency losses and high permeability, which can minimize the capacitance generated between the coil windings of the inductor under high-frequency and high resistance conditions. The most important performance parameter for ferrite used for suppressing electromagnetic in: 18

2023-07

Magnetic bead Magnetic beads are specifically designed to suppress high-frequency noise and peak interference on signal and power lines, and also have the ability to absorb electrostatic pulses. Magnetic beads are used to absorb Super high frequency signals. For example, some RF circuits, PLLs, oscillation circuits, and Super high frequency memory circuits (DDRSDRAM, RAMBUS, etc.), magnetic beads need to be added to the power input part. Inductors are energy storage elements, which are used in LC oscillation circuits, medium and low frequency filter circuits, etc., and their application frequency range rarely exceeds 50 MHz.The main function of magnetic beads is to eliminate RF noise present in transmission line structures (circuits). RF energy is the AC sine wave component superimposed on the DC transmission level, and the DC component is the useful signal required. However, RF energy is useless electromagnetic interference transmitted and radiated along the line (EMI). To eliminate these unnecessa: 18

2023-07

Magnetic bead function In a circuit, as long as the wire passes through it, it can be used (I use wires that look like ordinary resistors, and the wires have been threaded and glued, and there are also surface mount forms, but I rarely see them sold). When current passes through a wire, ferrite has almost no impedance to low-frequency currents, while it has a significant attenuation effect on higher frequency currents. The high-frequency current is dissipated in the form of heat, and its equivalent circuit is a series connection of an inductor and a resistor, with the values of both components proportional to the length of the magnetic bead. There are many types of magnetic beads, and manufacturers should provide technical specifications, especially the impedance frequency curve of the magnetic beads.Some magnetic beads have multiple holes, and using wires to pass through them can increase the impedance of the component (the square of the number of times the magnetic beads pass through). However, the increas: 18

2023-07

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