B B1 MAGNETIC MATERIAL + CORES MAGNETIC MATERIAL B1.3 FERROCARIT | FE 876 A material with high thermal and temporal stability, for high AC amplitudes or high premagnetization. For use in anti-interference and damping coils SYMBOL VALUE UNIT µi 75 ± 15% 1 tanδ / µ i 100 10 µa 120 1 -6 CONDITIONS Initial permeability µi as a function of frequency f 25°C ; ≤ 10 kHz 100 ≤ 0,25 mT 90 25°C ; 0,16 MHz ≤ 0,25 mT 80 70 1 kHz 60 25°C ; 10 kHz 66 46 <5 Tmax 180 10 -6 /K 50 40 2000 A/m 1 µΔ αF µi 500 mT 25°C ; 10 kHz 30 5000 A/m 20 25°C - 70°C ≤ 10 kHz; ≤ 0,25 mT 10 0 10 °C Incremental permeability µΔ as a function of premagnetization H_ 100 f / kHz 1000 Amplitude permeability µa as a function of Bs 140 100 120 90 80 100 70 80 µa µΔ 60 50 60 40 40 30 20 20 10 f = 1 kHz ΔB = 2 mT 0 0 100 1000 H_ / A/m 10 10000 Magnetization curves 1000 Amplitude permeability µa as a function of Hs 2000 140 1800 120 1600 1400 100 1200 80 1000 µa B / mT 100 Bs / mT 800 60 600 40 400 200 0 -1000 0 20 f = 1 kHz 0 0 100 10000 20000 30000 40000 50000 60000 70000 80000 H / A/m 189 1000 Hs / A/m 10000 B B1 MAGNETIC MATERIAL + CORES MAGNETIC MATERIAL Unipolar losses (20% ripple) Unipolar losses (30% ripple) 1000 1000 100 kHz 75 kHz 50 kHz 75 kHz 50 kHz 100 25 kHz 10 2000 3000 4000 H_ / A/m 5000 Pv / mW/cm³ Pv / mw/cm³ 100 kHz 10 2000 6000 Spezific power loss Pv as a function of frequency f and induction Bs 10 kH z 10 0 kH z kH z 1000 40 Pv / mW/cm³ 10000 100 10 10 100 Bs / mT 25 kHz 100 1000 190 3000 4000 H_ / A/m 5000 6000