Re: LF: Re: Re: Re: Wilkinson combiners

[Andy Talbot <andy.g4jnt@gmail.com>]

What do you have against ferrite in transformers?   So long as you obey the flux equation. 

V = 4.44 .F.N.A.B    and keep B down to below 0.1Tesla ferrite will work brilliantly.    

Certainly does in my  700 Watt 137 and 400W 475kHz designs.   Just using standard (actually a rather old material now, now)   SMPSU transformer cores.

Andy  G4JNt

On 6 April 2017 at 19:33, Alan Melia <alan.melia@btinternet.com> wrote:

Hi Steve
Aha .....I see what happened ...... Chris mentioned having or getting a couple of big ferrite toroids for a different version following your design.....He is currently using air core.....so it may the Chris's slip as refering to the toroids as "ferrite" :-))   easy done.

Alan
G3NYK

----- Original Message ----- From: "Steve" <VE7SL@shaw.ca>
To: <rsgb_lf_group@blacksheep.org>
Sent: Thursday, April 06, 2017 7:21 PM
Subject: LF: Re: Re: Wilkinson combiners

Alan...I went to make the change but I see the blogspot already indicates "powdered-iron" and not "ferrite".

Did you see the ferrite reference here or somewhere else?

Steve

If you go to toroids you should use "iron dust" not ferrite in my opinion Steve may disagree :-))

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