[Elecraft] OT: Protecting Toroidal Cores

[Charlie T]

Yeas, but it's a destructive test, like checking the opening current for a
fuse.
I would guess that any core, whether ferrite or powdered iron would be
subject to some water absorbs ion in not coated/painted.

73, Charlie k3ICH




-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On
Behalf Of donovanf at starpower.net
Sent: Wednesday, May 02, 2018 12:56 AM
To: jim at audiosystemsgroup.com
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] OT: Protecting Toroidal Cores

I have not, but its easy to test! 

----- Original Message -----

From: "Jim Brown" <jim at audiosystemsgroup.com>
To: elecraft at mailman.qth.net
Sent: Wednesday, May 2, 2018 4:44:44 AM
Subject: Re: [Elecraft] OT: Protecting Toroidal Cores 

On 5/1/2018 9:30 PM, donovanf at starpower.net wrote: 
> Some mixes will absorb water then crack when frozen
> 
Hi Frank, 

Have you kept track of which mixes have that characteristic? 

73, Jim K9YC 

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