What are the Properties of a Neodymium Magnet? The main characteristic of neodymium magnets is how strong they are for their size. The magnetic field of a neodymium magnet occurs when a magnetic field is applied to it and the atomic dipoles align, which is the magnetic hysteresis loop. When the magnetic field is removed, [...]
Audio Device Speaker Magnet Everyone knows that magnets are needed in electroacoustic equipment such as speakers, speakers, and headphones, then -What role do magnets play in electroacoustic devices? -What effect does the magnet performance have on the sound output quality? -Which magnet should be used in speakers of different qualities? Come and explore the speakers [...]
Speaker and Headphone Magnets Everyone knows that magnets are needed in electroacoustic equipment such as speakers, speakers, and headphones, then -What role do magnets play in electroacoustic devices? -What effect does the magnet performance have on the sound output quality? -Which magnet should be used in speakers of different qualities? Come and explore the speakers [...]
Bar Magnets Usage How do you remove iron powder which has attached to the bar magnet? It can be easily removed by patting over it using sticky tape. Maintenance and replacement time The stainless case is 0.5mm thick. It may become thinner due to the hardness of the magnetic substance and contact friction. Although the [...]
B-H Curve for Permanent Magnets What is a B-H curve first of all? B is the nomenclature for magnetic flux density (induction) and H is magnetic field strength; a B-H curve plots out the relationship between them for a particular ferromagnetic material. The changes in magnetic flux density is dependent on the magnetic field strength. [...]
Permanent Magnets Operating Temperatures All Permanent Magnets experience variations in field strength (flux density) as the ambient temperature increases or decreases. How these variations in operating temperature influence magnetic strength depend on the type of magnetic material and the degree above or below ambient temperature in which they are expected to operate. The shape of [...]
Magnetic Theory and Design 1. Can you explain the difference between coercive force and intrinsic coercive force? The intrinsic coercive force is the coercivity of a magnet material in a closed circuit configuration. A closed circuit configuration means the magnet does not have any exposed poles. Some examples of a closed circuit configuration are a [...]
Magnetic Magnetization Patterns Isotropic magnets, such as Bonded Nd-Fe-B, are unoriented and have no preferred direction; therefore it is possible to magnetize them in any direction. Almost all other materials are anisotropic and have a preferred direction of magnetization. They will exhibit the best magnetic properties when magnetized in the direction of the grain. Higher [...]
Magnetic Caculations - About Rules of Thumb and Quick Calculations 1. How are energy product and magnet strength related? Magnet strength needs to be defined. Magnet strength actually is a measure of total flux in the area of interest. If greater holding strength is desired, then more Br is needed, and since holding force is [...]
Modeling Eddy Current Losses in Permanent Magnet Motor Let’s begin with our model geometry. In this example, we have a 3D model of an 18-pole PM motor. To reduce computational efforts and capture the full 3D behavior of the motor, we use sector symmetry and axial mirror symmetry. You can see an animation of the [...]