High-Frequency Power Supply Cores
Features of High-Frequency Power Supply Cores:
♦ High saturation magnetic flux density - effectively reduces the volume of the transformer
♦ High permeability, low coercivity - toroidal cores greatly improve efficiency, reduce excitation power, lower iron loss and copper loss
♦ Low loss - this prevents temperatures from rising in the high-frequency power upply core
♦ Excellent temperature stability - can work within a -55 ℃ ~ 130 ℃ temperature range during long term operation
Applications:
♦ High-frequency induction heating power supply
♦ Inverter welding power supply
♦ Communication power supply
♦ UPS power supply
♦ Laser power supply
♦ Electrolytic plating power
Basic Magnetic Property Comparison of Nanocrystalline and Ferrite
| Performance | Saturation magnetization Bs(T) | Residual magnetic flux density Br(20kHz) | Coercivity Hc( A/m ) | Permeability μ(20kHz ) | Iron Loss Ps(w/k) | Iron Loss Ps(w/kg) | Iron Loss Ps( w/kg) | Resistivity ρ (μ Ω ·cm) | Curie temperature Tc/℃ |
| Nanocrystalline | 1.25 | ＜0.2 | ＜1.6 | ＞2x10 4 | 20kHz,0.2T＜ 3.4 | 20kHz,0.5T＜ 25 | 50kHz,0.3T＜ 30 | 130 | 560 |
| Ferrite | ≤0.5 | 0.2 | 6 | 2000 | 20kHz,0.2T＜ 7.5 | Out of service | Out of service | 106 | ≤220 |
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