 |
 |
 |
 |
 |
 |
 |
|||||
|
|||||||||||
> News > New Product
-
Magnetic fluids are colloidal suspension of surfactant-coated magnetic materials in a liquid medium where the sizes of the particles are of several nanometers. Typically known as an example of functional fluid in the magnetic field, magnetic fluids, to simply put, are liquids that have magnetic properties.
Magnetic fluids are attracted to the magnet and flow toward a magnet when brought near. In other words, the magnetic fluid can provide the restoring forces in the form of magnetic attraction.
The strength of the magnetic field and the magnetization of the fluid affect the magnetization of the fluid affect the magnetic forces that hold the fluid in place. This means that the retention forces of the fluid can be adjusted by controlling the saturation magnetization of the fluid and the strength of the external field.
- More controls are possible to synthesize different types of magnetic fluids that provide optimum combinations of magnetization and viscosity values needed for various requirements in designing devices. Applied either to solve mechanical or electromechanical problems of a device, a magnetic fluid can be a dynamic performance enhancer of the device.
[Composition of a Magnetic Fluid]
- Magnetic fluids are placed between the pole piece and the top plate of the loudspeaker magnet. The magnetic fluids help dissipate heat generated by the voice coil as a cooling agent that helps increase power handling and prevents cpmpression effects even on high load.
In a conventional loud speaker, the "spider" - typically a pleated fabric - acts like a spring to return the voice coil back to its starting position, centered within the magnet's gap. The magnetic fluid technology further replaced the function of the typical spider in a loud speaker with the upgraded performance.
The magnetic fluids with the magnetic properties guide the voice coil to be centered within the gap. Particularly at high output levels, the greater precision of the magnetic fluids reduces distortion, known as compression effects, resulting in better acoustic performance of a speaker system.
In addition, the voice coils are more efficiently heat-sinked by the fluids instead of air, which also leads to greater linearity. With an increase of the heat transfer rate from the voice coil under long term, high-power use, magnetic fluids prevent corrosion from occurring in the magnetic strip. As a result, long-term reliability required for permanent installations is considerably enhanced. 
[Magnetic Fluids in the Magnet Strip]
