Made of Co-based amorphous ribbon or Fe-based nanocrystalline ribbon, cores have the nature of extremely high permeability (about 60-80×10⁴) ,high remanence ratio ( B_r/B_s, also called squareness ratio) , and small volume etc.

 

Applied to magnetic amplifier of switch power supply, This core can play a good role of stabilizing voltage. As a result of high squareness ratio, small dead angle, the magnetic amplifier can regulate in a wide range.

 

Moreover, as dramatic change before and after magnetization, which is useful for the pulse delay , it is a perfect material for pulse compressor.