Iron Powder Hollow Cores

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Mode: Hollow Cores ( Iron Powder Hollow Cores)
Composite: Iron powder
Temperature Effects:
The working temperature of iron powder core is between -65℃-125℃.When the working temperature rises than 150℃,the organic adhesive will begin to decompose,resulting in the degradation of the device’s performance and shortening of devices’s life.The severity of the degrading depends on the time,temperature,size of the iron powder core,working frequency and the flux density.
Applications:
High frequency chokes
Output chokes for switching power supplies
Conducted EMI noise filters
Pulse transformers
DC output/inpit chokes
Light dimmer chokes
Power factor correction inductors

Introduce of hollow core

Hollow cores, so named are because the core is shaped with a hollow square through the center. Hollow cores are made up iron alloys which are ground and thoroughly mixed with a binding material, then pressed in a press to form a core. The binding material is an insulator; hence it reduces the eddy currents. This extends the useful frequency range of the composite cores. Hollow cores can be used up to about five kilohertz depending on the A.C. kilogauss level, above 10 kilohertz at low A.C. gauss levels. The binding material also provides a distributed air gap in the structure of Hollow cores.

Application of hollow cores

Hollow core is frequently used as ripple filter inductors in D.C. power supplies. The D.C. flux can be high as long as the A.C. flux is sufficiently small. The distributed air gap properties inherent in iron powder cores also make Hollow cores extremely well-suited for a variety of energy storage inductor, power Conversion products; RF products application.

FERRITE CORE Iron Powder core is an extremely excellent material, having a good stability, a high Q value, the frequency response characteristics, and good energy handling capability; iron powder cores suitable for high-Q inductor of the frequency of 50kHz to 500MHz, and 50MHz broadband transformers; iron powder as a core material for many years has been widely used in the radio frequency (RF) uses the natural the gap distribution characteristics of iron powder cores, and also make it very suitable for a variety of energy storage inductor control applications.