Magnetic Materials in Loudspeakers (Horns) The core component responsible for producing sound in audio equipment is the loudspeaker, commonly known as the horn, whether it is a stereo or a headset, this key component is indispensable. The loudspeaker is a transducer device that converts electrical signals into acoustic signals. The performance of the loudspeaker has [...]
Halbach Array, Halbach permanent magnet is a magnet structure. In 1979, American scholar Klaus Halbach discovered this special permanent magnet structure when he was doing electron acceleration experiments and gradually improved it, eventually forming the "Halbach" magnet. It is an almost ideal structure in engineering. It uses special magnet arrangement to enhance the field strength [...]
Surface magnetism refers to the magnetic induction intensity at a certain point on the surface of the magnet, and the unit is Gauss Gs or Tesla T (1T=10000Gs). The surface magnetism at different positions on the surface of the magnet is not the same. Generally speaking, "surface magnetism" refers to the center surface magnetism of [...]
Magnetic Induction B and Magnetic Polarization J Practice and theory have proved that when a ferromagnetic or ferrimagnetic substance is magnetized in a magnetic field, in addition to the magnetic field in the substance, because the magnetic moments of the atoms of the ferromagnetic substance turn to the direction of the external magnetic field, it [...]
Hysteresis Curve and Intrinsic Demagnetization Curve (B-H Curve and J-H Curve) Permanent magnet materials have two notable features, one is that they can be strongly magnetized under the action of an external magnetic field, and the other is hysteresis, that is, the material remains magnetized after the external magnetic field is removed. The relationship between [...]
Commonly Used Soft Magnetic Core Iron Powder Core Permalloy Powder Core Iron-Silicon-Aluminium Powder Core Magnetic powder core is a kind of soft magnetic material made by mixing and pressing ferromagnetic powder and insulating medium. Ferromagnetic particles are very small (0.5-5 micron used at high frequencies) and are separated by non-magnetic insulating film materials. Therefore, on [...]
Magnet Common Sense As we all know, magnets are very useful in our daily life. To let those who are new to the world of magnets have a better understanding of them, in this article, we’ll introduce some common sense of magnets. A Brief History of Magnets The ancient Greeks and Chinese discovered a naturally [...]
How to distinguish the north and south poles of magnet? Magnets are widely used in various industries, because of magnetic adsorption and magnetic induction, many electronic products, hardware, machinery and other industries! So before many customers use magnets, there is a doubt, how to distinguish the north and south poles of the magnet, because the [...]