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E and EFS Cores

E cores are used for low to medium power transformers and transducers for a frequency range from 10 to 500 kHz. These high-frequency transformers generally consist of two mechanically produced wire-wound coils for primary and secondary excitation, the E core pairs and special clamps.

Transformers can transfer a maximum power of several kW in dependence of material and design.

Common-mode chokes are another important field of application for EE and EI cores. They are mainly used in small-signal technology and contain medium perm materials K4000 and K6000.

The product range comprises:
  • E cores according to IEC 61246
  • ETD cores according to IEC 61185
  • EP cores according to IEC 61596
  • ER cores
  • PE cores