 High Flux Powder Cores
MAGNETICS® High Flux powder cores are distributed
air-gap toroidal cores made from a 50% nickel - 50% iron alloy powder for
the highest available biasing capability of any powder core material.
High Flux cores have certain advantages that make them quite useful for
applications involving high power, high DC bias, or high AC bias at high
power frequencies. High Flux cores have a saturation flux density of
15,000 gauss, as compared to 8000 gauss for standard MPP
cores or 4500 gauss for ferrite
cores. The core loss of High Flux powder cores will offer a
reduction in core size over powdered iron cores in most applications.
For complete technical information regarding material characteristics
and core parameters, refer to the Powder Cores Design Manual and Catalog.
| Special Advantages of MAGNETICS
High Flux Powder Cores |
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Switching Regulator Inductors
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In-Line Noise Filters
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Flyback Transformers, Power Factor Correction, and Pulse
Transformers
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- High Flux Powder Cores are naturally suited for
the energy storage filter inductors used in switch-mode power
supplies. The 15,000 gauss saturation level of High Flux cores provides a higher energy storage capability than can be
obtained with gapped ferrites or powdered iron cores of the same
size and effective permeability.
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High Flux cores will often result in a marked size and cost
reduction when used in inductors that must carry large amounts of
direct current.
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- High Flux cores are ideal for in-line noise filters where
the inductor must support large AC voltage without core
saturation occurring.
- Line filters using High Flux cores
can be smaller in size, requiring fewer turns than powdered
iron or ferrite
cores.
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- High Flux powder cores have a very low residual flux
density. Combined with their saturation flux density of
15,000 gauss, this very large ΔB makes these cores excellent for
use in power factor correction circuits as well as
unidirectional drive applications such as flyback transformers
and pulse transformers.
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