OT. Jumbo P Core Ferrite F.S.

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:

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