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
E cores are made of K2004, K2006, K2008, K2001, K 2024 and K2500. For power materials, the following upper frequency limits can be observed depending upon excitation:
|K 2004 ≤ 100 kHz|
|K 2006 ≤ 200 kHz|
|K 2008 ≤ 300 kHz|
|K 2010 ≤ 500 kHz|
|K 2001 ≤ 1.5 MHz|
|K 2024 ≤ 100 kHz|
|K 2026 ≤ 100 kHz|
|K 2500 ≤ 100 kHz|