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Topband: Effect of DC on Ferrite Toroids?

To: <topband@contesting.com>
Subject: Topband: Effect of DC on Ferrite Toroids?
From: "Jeff Maass" <jmaass@k8nd.com>
Reply-to: jmaass@k8nd.com
Date: Mon, 8 Jan 2007 23:41:46 -0500
List-post: <mailto:topband@contesting.com>
I recall reading somewhere that putting DC current through wire turns on 
ferrite toroids
could result in damage to the material.

   Am I recalling correctly?

   Is there a current threshold that should be respected?

My concern is the +12Vdc on the feedline to a preamplifier, which will pass 
through a
choke of 8 turns of RG-8X through four #31 2.4-inch toroids. The current is low.

73,  Jeff  K8ND

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