ETD (Economical Transformer Design) cores were developed specifically for Power Transformer cores used in Switched Mode Power Supplies (SMPS). The combined cross-sectional area of the two outer limbs equals the cross-sectional area of the centre limb allowing an even flux distribution throughout the core. This ensures the absence of localised ‘hot spots’ that can reduce performance at high frequencies or high flux levels. Their round centre limb provides for a shorter path length (approximately 11%) when compared to a square centre limb with an equal area. This in turn reduces the losses of the windings and enables the core to handle a higher output power.

Gapped cores are available on request.

ETD_29.pdf ETD_29.pdf (221.77 KB)

ETD_34.pdf ETD_34.pdf (218.73 KB)

ETD_39.pdf ETD_39.pdf (217.15 KB)

ETD_44.pdf ETD_44.pdf (211.29 KB)

ETD_49.pdf ETD_49.pdf (215.27 KB)

ETD_54.pdf ETD_54.pdf (209.16 KB)

ETD_59.pdf ETD_59.pdf (219.50 KB)