Magnetic Amplifier 2019-02-03T18:31:45+00:00

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.


  • 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)1.25TSaturation 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)800Continuous Operating Temperature Range-55~130℃

Magnetic Properties

Annealing MethodNon-magnetic Annealing
Initial Permeability>150,000
Maximum Permeability>600,000
Residual Magnetic Flux Density0.6T
Iron Loss P(20kHz,0.5T)<25W/kg
Iron Loss P(100kHz,0.3T)<150W/kg
Iron Loss Change Rate (-55℃~125℃)<15%


  • 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


Cores with other specifications can be provided concerning to customer demand.

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