Soft magnetic cores
Soft magnetic cores
Amorphous cores are made of sheet metal, which with its crystallographic structure resembles glass more than metal.
The properties of this sheet metal have found application in the manufacture of transformers. Amorphous cores allow the miniaturization of transformers and reduce the losses generated in them.
Research on amorphous cores has been carried out since 1982 by the Department of Functional Materials of Lukasiewicz-Institute of Non-Ferrous Metals.
High-end modern production equipment and cooperation with an accredited magnetic measurement laboratory allow us to offer the highest quality components.
Manufactured core types
| Type | Description | Application | Advantages |
|---|---|---|---|
| ACoL | Amorphous cores | magnetic screens | The material has good soft magnetic properties in the AQ state |
| AFeNiL | Amorphous cores with high magnetic permeability | pulse power supplies, force sensors | high rectangularity ~ 0.99, high specific resistance |
| AML | Amorphous cores for distribution exposing transformers | Transformers with 230/24V transmission of 200 watts to 1000 watts | Energy saving, environmental protection, idle power losses are about 80% lower than for silicon steel core transformers |
| ANT(P); NFT(P) | Amorphous and nanocrystalline, rectangular cores for transformers with increased operating frequency | low and medium power transformers with increased operating frequency | Easy installation; low remamence; linear dependence of B(H) over a large range of B changes |
| AMT | Amorphous cores with high saturation induction and reduced magnetic permeability | special transformers; switching power supplies; induction heating | |
| NFG | Nanocrystalline cores with reduced magnetic permeability | Switching power supplies | higher saturation induction (Bs≥1T); lower losses than in a conventional ferrite choke; lower number of turns; |
| NFI | Nanocrystalline cores with high saturation induction and magnetic permeability | anti-interference reactors; transformers; current transformers | High saturation induction; good temperature stability |
| NFT | Nanocrystalline cores with reduced remamence | Switching power supplies; Special power supplies | |
| NPT | Nanocrystalline cores with high saturation induction and reduced magnetic permeability | special transformers; switching power supplies; induction heating | The linear relationship of B(H) over a large range of changes in B |
| AMZ | Amorphous cores for medium frequency transformers | Transformers for induction heating; mains transformers; transformers for static converters | braided design allowing ready-made windings to be applied to the core |
Production range
Explanation of parameters
- (P) — Rectangular version
- Bs — Saturation induction
- Br — Remamence
- Hc — Coercion field
- μmax — Magnetic permeability
- Ps [W/kg] — Power losses in the core
- λs — Magnetorestriction
- fp [kHz]— Frequency
- Tp — Operating temperature
Geometric dimensions of the cores
| Dimensions | Parameters | Working conditions | |||||||||
| Type | OD/ H [mm] | ID/ W [mm] | Bs | Br | Hc [A/m] | μmax | Ps [W/kg] | λs | fp [kHz] | Tp [℃] | |
| ACol | 30-50 | ≥ 20 | 0,6-0,7T | 0,3-0,45T | 1,5-2 | = 100 000 – 200 000 | >~ | >150 | |||
| AFeNiL | 30-50 | ≥ 20 | 0,78-0,8T | 0,75T | 3-4 | ≥ 200 000 | 0,1 | (for f=50Hz i B=0,7T) | 12 x 10-6 | > 20 | >150 |
| AML | 30-200 | ≤ 20 | 1,4-1,56T | 1-1,3T | 5-8 | ≥ 100 000 | 0,2-0,3 | (for f=50Hz i B=1,4T) | 25 x 10-6 | > 10 | >200 |
| AML(P) | 50-200 | ≤ 20 | 1,4-1,56T | 0,8T | 5-8 | ≥ 100 000 | 0,2-0,3 | (for f=50Hz i B=1,4T) | 25 x 10-6 | > 10 | >200 |
| AMT | 50-120 | 30-80 | 1,4-1,56T | 0,1-0,3T | < 10 | ≥ 2000 | 0,1 | (for f=50Hz i B=1,1T) | 25 x 10-6 | > 20 | >200 |
| AMT(P) | 15-50 | 15-250 | ≤ 1,5T | ≤ 0,11T | > 5 | >100 | |||||
| NFT | ≤ 120 | ≤ 80 | 1,15-1,2T | 0,05-0,25T | 1-1,5 | ≤ 30 000 (The linear relationship of B(H) to the value of B=1T ) | 0,01 | (for f=50Hz i B=1,1T); Ps= 146 W/kg (for f=100Hz i B=0,4T) | 0,5 x 10-6 | > 300 | >200 |
| NFT(P) | 15-50 | 15-250 | ≤ 1,5T | ≤ 0,11T | > 5 | >100 | |||||
| NFG | 25-50 | 20-40 | 1,1T | ≤ 0,02T | μ= 20-100 | > ~ MHz | >150 | ||||
| NFI | ≤ 120 | ≤ 80 | 1,15-1,2T | 0,8-1T | < 10 | μ > 100 000; ≥ 300 000 – 500 000 | 0,04 | (for f=50Hz i B=1,1T) | 0,5 x 10-6 | > 300 | >200 |
| NPT | ≤ 50-120 | ≤ 30-80 | 1,5-1,6T | 0,1-0,3T | 30-50 | ≤ 1500 | 1-2 | (for f=50Hz i B=1,4T) | 8 x 10-6 | > 100 | >250 |
| AMZ | ≥ 60 | ≤ 40 | 1,5-1,6T | ~ 0,8T | 5 000-100 000 | 1,4 – 1,56 | (for f=50Hz i B=1,4T) | 25 x 10-6 | > 20 | >200 | |
| AMZ(P) | ≥ 50 | ≤ 30 | 1,4-1,56T | ~ 0,8T | 5 000-100 000 | 0,2 – 0,3 | (for f=50Hz i B=1,4T) | 25 x 10-6 | > 20 | >200 |