AMFN series magnetic cores of high permeability are now available that is made of nanocrystaiine alloys that offers very low hysteresis loss.
Recently, EMI (electromagnetic inference) considerations are increasingly important as electronic devices become part of our daily lives. This has rapidly increased the required performances for EMC (electromagnetic compatibility ) components such as common mode choke coils, which provide protection against incoming and outgoing high frequency noise. They also protect electronic devices against high voltage pulse noise generated by spark discharge, etc. These types of noise are created whenever there are rapid transitions in voltage and/or current waveforms. In switching power supplies, the waveforms are periodic, but it’s waveforms are non-periodic in case of data line for telecommunication. The application area of common mode chokes covers all products from telecommunication product for signal transmitting to switch-mode power supplies, frequency converters, and UPS units.
Common mode chokes are mainly used to provide attenuation of asymmetrical conducted interferences. Their design is determined by the specifications of the corresponding international standards and the specific interference suppression problem.
AMFN series common mode chokes shows a higher insertion attenuation, that is insertion damping, overall the wide-range of frequency. The typical permeability of AMFN series common mode choke is 80,000. To satisfy these requirements, AMOGREENTECH will be provide a higher level of common mode chokes with AMFN series flat loop cores.