Ferrite EC, ER, ETD and EER Cores
EC, ER, ETD
and EER shapes are a cross between E cores and pot cores. Like E
cores, they provide a wide opening on each side. This gives adequate
space for the large size wires required for low output voltage switched
mode power supplies. It also allows for a flow of air which helps
keep the assembly cooler. The center post is round, like that of the
pot core. One of the advantages of the round center post is that the
winding has a shorter path length around it (11% shorter) than the wire
around a square center post with an equal area. This reduces the
losses of the windings by 11% and enables the core to handle a higher
output power. The round center post also eliminates the sharp bend
in the wire that occurs with winding on a square center post.
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Advantages of MAGNETICS® EC, ER, ETD, EER Core Assemblies |
- wide core selection
- PCB and surface mount bobbins
- minimal wire losses
- heavy wire capability
- multiple tap capability
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- consistency and uniformity
- compact packaging on PCB
- easy mounting
- easy, low-cost assembly
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- These cores are offered in low-loss materials for high
performance transformers and inductors. They may be
provided gapped for power inductors and other high DC bias
applications.
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