Eddy Current Loss of Rare Earth Permanent Magnet Both samarium cobalt and neodymium iron boron are metal materials. Due to the good electrical conductivity of metal materials, the resistivity is very low. This is not a good thing for rotating machinery such as motors, because it will bring eddy currents to rotating machinery Loss, causing [...]
Magnetic Materials in Voice Coil Motors (VCM) Voice coil motor, VCM is a special form of direct drive motor, which can directly convert electrical energy into linear motion mechanical energy. The principle is to put a cylindrical winding in a uniform air gap magnetic field, and the winding generates a magnetic field. , Drive the [...]
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 [...]
Soft Ferrites Applications Ferrites are polycrystalline oxides manufactured by ceramic technology and belong to a class of materials that exhibit the technically useful property of ferromagnetism. In a ferromagnetic material, magnetism occurs under the influence of an externally applied field. On removals of this field, material returns to its non-magnetic state. This behaviour is termed [...]
About LLC Converter Topology Power conversion is the process of converting electrical energy from one form to the other. The devices responsible for this conversion can work to convert alternating current (AC) into direct current (DC) & vice versa. They range from simple setups like a transformer to more complex conversion systems like resonant converters. [...]
Why are Ferrite Cores Used for Antenna Coils? Antennas have been used for many years to catch waves that are invisible to the naked eye. These electromagnetic waves travel around us, carrying information that’s grabbed by the antennas & used by the application it's attached to. Since all current-carrying wires around us develop their own [...]
Know About Ferrite Cable Cores As long as electronic items surround us, electromagnetic waves will be around us too. These waves are naked to the human eye and won’t affect your day-to-day activities. Born from the flow of electric current, these, however, can affect parts of devices like the power supply cable. The cable acts [...]
Know About Ferrite Core Transformers A transformer is a device used in the distribution and transmission of alternating current (AC). It does so by stepping up (increasing) or stepping down (decreasing) the voltage to attain the desired values. Hence, in simple terms, you can understand it as a voltage control device that works on the [...]
Know About Coated & Uncoated Toroidal Cores Toroidal cores are used as power shapes in electric circuits such as inductors and transformers. They are an ideal material to use at low frequencies where large inductances are required. The cores offer the advantage of material permeability and have a uniform cross-sectional area. They do not have [...]
Inductor, Magnetic Core, Magnetic Material Powder Servo Molding Machine Application Powder servo molding machines are widely used in powder metallurgy, magnetic materials, inductance integrated molding, precision ceramics, 5G filters, cemented carbide, fasteners, stamping molding, new energy, lithium batteries, auto parts, 3C and other industries, especially It is suitable for pressing and forming of complex products [...]
Desktop Scanning Electron Microscopy—Sampling Method for Magnetic Materials In this issue, we will talk about the method of using a desktop scanning electron microscope to observe the sample preparation method of magnetic materials. Generally, demagnetization is required before analysis. The main reasons are as follows: 1. Generally, the lens and scanning coil of a desktop [...]
Scientists Find That Some Magnetic Materials Freeze When Heated Physicists have found that some magnetic materials freeze when the temperature rises above a certain level. Usually, freezing occurs only when an object is cooled, not when it is heated. So this leaves physicists scratching their heads and bewildering. Heating but freezing? Alexander Khajetoorians, a physicist [...]