Ferrite Core Power Handling Capacity

choosing core size - VKHam

While laminated and ferrite core material are both magnetic material, they nominally operate in completely different frequency ranges. Laminated cores typically operate at power distribution frequencies that are less than 100 Hz while ferrites operate above 1 kHz and easily into the MHz regions. So trying to compare these two core materials to each other using the same frequency will always have one of them operating outside of their nominal operating frequency. If you instead change the operating frequency to match the material, then ferrite material has an obvious apparent advantage because power is energy per unit of time. Unfortunately many other parasitic effects (skin effect, free space transmission, switching losses, capacitive losses, etc.) at these higher frequencies can with a poor design rob all of the apparent advantages of using a ferrite.

I tried a Google search on your part number but could not easily identify a manufacturer of ferrites with this part number. So I cannot elaborate any further.

Good Luck

G.A. from my part. (laminated cores however can range kHz - re: end transformer type power amplifiers)

Laminated cores most certainly have been designed to reach a few 100 kHz. I tried to focus on the most common application of power distribution frequencies that laminated cores dominate.

Can you detail your product a little more. The last U- thing I heard of was a U- boat and a U- tube. What is the composition, size, dimensions, weight and for the economists under us, the price of your core? Some might even be interested in the color. Or the supplier. He should be able to answer the question(s).

When you have a heavy DC welding device power supply, you might test how much magnetism the core can handle before it cracks. But that is not practical, however used to make ferrite magnets for speakers (be it wired differently).

Turns are turns, whatever core you use. The power question is weight, admitted temperature and magnetic flux related to the product.

I take it this is in relation to your previous topic http://cr4.globalspec.com/thread/87640

http://www.cosmoferrites.com/material-detail.aspx

they have a UU12620 (you have to use a pair of U's to close the magnetic ckt), some design data and a cross-reference table for materials which will give you a link to other manufacturers with more design data.

brgds

Snel