Magnetic Amplifier
Nanocrystalline cores for magnetic amplifiers(Mag-Amp), are heat treated by longitudinal magnetic field,have high saturation flux density(Bs), high rectangle ratio(Br/Bm), low coercivity(Hc) and high curie temperature.
Characteristics
High saturation flux density Bs=1.25T – Small size, lower turns.
High rectangle ratio Br/Bm≥94% – Low dead angle voltage, large working current.
Low coercivity Hc≤36A/M @ 100KHz, 80A/M – Low reset current, high efficiency.
Physical Properties
| Saturation Magnetization(Bs) | 1.25T | Saturation Magnetostrictive Coefficient(λs) | <2×10-6 |
|---|---|---|---|
| Curie Temperature(Tc) | 560℃ | Density(d) | 7.3g/cm3 |
| Crystallization Temperature(Tx) | 510℃ | Resistivity(ρ) | 130μΩ-cm |
| Hardness(Hv) | 800 | Continuous Operating Temperature Range | -55~130℃ |
Magnetic Properties
| Annealing Method | Non-magnetic Annealing |
|---|---|
| Initial Permeability | >150,000 |
| Maximum Permeability | >600,000 |
| Residual Magnetic Flux Density | 0.6T |
| Coercivity | <0.8A/m |
| Iron Loss P(20kHz,0.5T) | <25W/kg |
| Iron Loss P(100kHz,0.3T) | <150W/kg |
| Iron Loss Change Rate (-55℃~125℃) | <15% |
Applications
Desktop personal computer power supply
Server computer power supply
Switched mode power supply
Performance Curves
Core Dimension
OD-Outside Diameter ; ID-Inside Diameter ; HT- Height
Specification
Cores with other specifications can be provided concerning to customer demand.
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