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Re: Ferrite rings
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To: tesla-at-grendel.objinc-dot-com
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Subject: Re: Ferrite rings
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From: i_hopley-at-wintermute.co.uk (Ian Hopley)
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Date: Wed, 6 Mar 1996 20:50:05 GMT
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>Received: from oberon.wintermute.co.uk (root-at-oberon.wintermute.co.uk [193.133.228.4]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with ESMTP id NAA09929 for <tesla-at-grendel.objinc-dot-com>; Wed, 6 Mar 1996 13:48:05 -0700
Hi jim
>Question, were these from "IBM AT" power supplies? telecom power
>supplies?
>
They were from a Motorola Codex 6745 statistical multiplexer
>The high value cores were from the common mode filter inductors, the 2
>windings are effectively in anti parallel, for the mains current but
>in parallel for the RFI. They can therefor have a high permeability
>because the don't have to handle a large current.
>
Sorry have i missed another point here? does the higher permeability
mean, despite higher inductance values, that the current capability is less
due to the core saturating.(a few years since i was at college)?
*******************************************
Ian Hopley ----> i_hopley-at-wintermute.co.uk
Aberdeen
Scotland
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