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What is the difference between the magnetic ring and the magnetic core?

Magnetic rings and magnetic cores are electronic components that are often used in winding coils and transformers, but many people don't know the difference between magnetic rings and magnetic cores, especially for those who are new to the industry. Easy to confuse.
First, set at:
1. Magnetic ring, also known as ferrite magnetic ring, is a ring-shaped magnet. The main material is ferrite. The magnetic ring has different impedance characteristics at different frequencies, and its magnetic permeability generally ranges from tens to 1,000. Generally, the impedance is small at low frequencies, and the impedance of the magnetic ring rises sharply when the signal frequency increases.
2. A magnetic core refers to a sintered magnetic metal oxide formed by mixing and mixing various iron oxide mixture media. The magnetic permeability of the magnetic core is generally from tens to thousands. The magnetic properties depend mainly on the magnetic permeability of the powder material, the size and shape of the particles, their filling factor, the content of the insulating medium, the molding pressure and the heat treatment. Process, etc.
Second, the characteristics:
1, the magnetic ring is not so special, the electromagnetic performance of the magnetic ring is changed by the operating conditions, the magnetic ring is generally used in the place of interference, mainly to prevent the external frequency of the signal from invading the electronic device, and it can be useful The signal is very good through the electronic device. One thing is that when choosing a magnetic ring, it depends on whether there are any gaps or burrs on the surface. These problems will lead to the characteristics of the magnetic ring. It does not play its function well. When using it, it must use the magnetic ring impedance. Testers and inductive testers and other related instruments are used for testing. The impedance tester can check that the magnetic ring can reach a certain impedance value. The inductance tester mainly measures the inductance of the magnetic ring. At the same time, if you want a magnetic ring with good performance, you should not only test it. The key is still from production. Production is a part of the life of the magnetic ring. The quality of a magnetic ring depends on each process of production. Strict testing is carried out in the back to make a good magnetic ring.
2, the magnetic core is also made of ferrite material, but its shape is quite special, there are E-shaped magnetic core, as well as tile-shaped magnetic core and other various shapes. The E-shaped magnetic core is made of a copper wire and becomes a transformer. The transformer is inserted on the circuit board, which mainly plays a sensing effect. The tile core is also a two-piece core, a two-piece core, which is similar in shape to a tile. It is usually assembled by a plastic shell to form a clip-on magnetic ring or an assembled magnetic ring. There are various kinds of names, most of which are used on the dry winding line, which is directly buckled on the dry winding source, which can play a good impedance characteristic. When the inner hole is large, it can be wound around a circle. The better the impedance of a circle, the more generally it should not exceed three. The magnetic core also has a variety of shapes and sizes. In the production of the core, the molding and sintering steps must be noted that it is relatively easy to deform.
Magnetic cores are widely used in connecting wire harnesses, AC inductors, output inductors, line filters, computers, converters, transformers, LED TV displays, and various home appliance control boards. Both the magnetic ring and the magnetic core can be customized according to the parameters provided by the requirements. It is a commonly used anti-jamming component for electronics, and the cost is low, and it is not the same as those outside the glamorous goods!

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