Senior Member
Joined: 11/12/2020
Location: CanadaPosts: 108
| Posted: 01:59am 27 Feb 2025 |
Thanks for the link for the Sendust cores. In Canada, the price comes up as $6.60 plus $9.45 shipping (CAD), but as you add more cores, the shipping just goes up by $1 each.
(until you hit 12 cores when the shipping goes up by an additional $60)
So to order 11pcs it works out to $8CAD or $8.84 AUD each which is the best price I have found around!
I tried ordering this size core earlier off an EBAY vendor, but they ended up not actually having the advertised cores and sent me MS184040-2 cores instead.
They refunded me, and I may use the cores for something, but obviously not ideal.
On another note, when I enter a stack of 9 pcs of this core (MS225125-2) with 4 turns in the Micrometals inductor Analyzer,
I am not seeing the inductance at the higher currents you are mentioning.
On my previous builds using 3xMS157060-2(Sendust) and 4xT250-40(Iron Powder) the inductor Analyzer numbers were surprisingly close to the numbers
I measured using a storage scope and high current source. Obviously what you have is working well, so just wanted to confirm that you are using
these cores with just 4 turns.
Here is the current vs inductance curve generated for a stack of 9 MS225125-2 cores with 4 turns.
I have double checked the core weights and sizes between the Micrometals core and the Aliexpress core and they match. So I am a little stumped with why the difference.