Author Topic: WTS [DK]: Ferrite cores, lots of them  (Read 1342 times)

Offline Mads Barnkob

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WTS [DK]: Ferrite cores, lots of them
« on: April 14, 2017, 08:49:10 PM »
This is all 3C85 or 3F3 material, has a frequency spectrum for use in the range of 200kHz to 1MHz, this is basically for medium power work in a few kW range.

Prices can be discussed according to amounts wanted. Open to offers :)

Shipping, world wide! 8€ for 500g and 16€ for 2000g!

1) 68x E core, 3C85 material, 80x40x20mm, 170g each, (7€/set of 2)


3) 32x Square core, 3C80 material, 25x25x100mm, (10€/set of 4)


4) 46x E core, 3C85/3F3 material, E65/32/27, (6€/set of 2)

« Last Edit: April 17, 2018, 09:32:33 PM by Mads Barnkob »
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Offline afk

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Re: Selling: Ferrite cores, lots of them
« Reply #1 on: April 18, 2017, 04:30:51 PM »
Just asking, where are you living now? Denmark? I ask in case I need to buy something and you can ship to my relatives in France.

On the other hand, are these ferrite cores good to make chokes in Royer IH? Does their performance are the same as toroid cores? I'm not good with these things myself (and magnetism in general), so while we are at it, can you explain the functionality of each of these cores?
« Last Edit: April 18, 2017, 04:33:18 PM by afk »

Offline Mads Barnkob

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Re: Selling: Ferrite cores, lots of them
« Reply #2 on: April 18, 2017, 08:37:07 PM »
Just asking, where are you living now? Denmark? I ask in case I need to buy something and you can ship to my relatives in France.

On the other hand, are these ferrite cores good to make chokes in Royer IH? Does their performance are the same as toroid cores? I'm not good with these things myself (and magnetism in general), so while we are at it, can you explain the functionality of each of these cores?

Yes I live in Denmark, I can do world wide shipping 8€ for 500g and 16€ for 2000g! When it gets heavier than that I have to find a specific shipping price.

These cores are primarily for medium power inverters up to kW range for the largest ones.

E cores can be used for lower voltages, below 1kV or could make some good large gate drive transformers

U cores are for high voltage transformers and high power transformers.
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Offline Acid Byte

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Re: WTS [DK]: Ferrite cores, lots of them
« Reply #3 on: April 17, 2018, 08:36:17 PM »
hey mads!
whats the price on that double U core?

Greetings Jeroen

Offline Mads Barnkob

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Re: WTS [DK]: Ferrite cores, lots of them
« Reply #4 on: April 17, 2018, 09:33:09 PM »
hey mads!
whats the price on that double U core?

Greetings Jeroen

I updated the thread with what is left, the small attached pictures was what was no longer for sale.
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Offline TDAF

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Re: WTS [DK]: Ferrite cores, lots of them
« Reply #5 on: April 19, 2018, 06:58:54 PM »
Is the 80*40*20 the largest e core you have?
How many kw of power can it handle?

Offline Mads Barnkob

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Re: WTS [DK]: Ferrite cores, lots of them
« Reply #6 on: April 20, 2018, 09:44:40 AM »
Is the 80*40*20 the largest e core you have?
How many kw of power can it handle?

it is the largest I have left, I do not have any specific datasheet for these, but you can find a similar datasheet for the same material type from ferroxcube or others.

But generally for a similar material, like 3F3, its in the ball park of 100-400 kHz for 80-150 kW/m^3
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Offline TDAF

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Re: WTS [DK]: Ferrite cores, lots of them
« Reply #7 on: April 20, 2018, 08:42:45 PM »
So, what are the leg dimensions of the 80*40*20 e core?
What might a suitable bobbin be for it?

Offline rikkitikkitavi

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Re: WTS [DK]: Ferrite cores, lots of them
« Reply #8 on: April 21, 2018, 11:17:33 PM »
The center leg is 20 mm wide, and 30 mm long. The outer two legs are 10 mm.
The gap is thus (80-20-2*10)/2 = 20 mm wide.

The width of the core is 20 mm.
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Re: WTS [DK]: Ferrite cores, lots of them
« Reply #8 on: April 21, 2018, 11:17:33 PM »

 


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