OT. Jumbo P Core Ferrite F.S.

Dec 20, 2013 2 Replies
A

Sorry, this is a Ferrite P Cores For Sale post.



I have 12 Sets of P66/56 3C81 P Cores. This is a very large core, approx 2-1/2" in Dia. and 2-1/4 " tall.



Here's the catalog, But I can't make it work right now, yesterday it was fine. Towards the end you will find P66/56 cores.



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And here is the material (3C81) information.



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I don't have the Bobbins, but they are available.



These cost $28.00 ea., I'll sell all twelve sets (24 halves) for $130.00 with Free shipping to the lower 48.



My address above is good.



Thanks, Mikek


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T

Ungapped, I take it?

FWIW, cores that size are good for at least 500W, and probably a kW or two. 3C81 isn't the fanciest, but fine up to 50 or 100kHz (at say ~0.2T), and more with derating. (I suppose if one were desperate, a cooling tube could be epoxied down the central screw hole, or something, to run them close to saturation at higher frequencies?)

Pot cores are, of course, fantastic for low noise / low interference applications, being pretty well shielded by nature.

Tempted to take you up on the offer myself, but I'd never use them all!

Tim

-- Seven Transistor Labs Electrical Engineering Consultation Website:

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A

They are ungapped. You could always sell what you don't use. :-) Tell me how many you want, and I'll see what I can do.

I think they can do 1kW with no problem, we used one size smaller

46/something, "can't remember the number this morning", running 1kw at 600kHz, although although we did recommend a duty cycle, but that was to protect our transducer. We produced high frequency high power ultrasonic systems.

Thanks, Mikek

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