small valves

[Allison]

>
>Subject: Re: small valves
>   From: Tore S Bekkedal <toresbe at ifi.uio.no>
>   Date: Sat, 21 May 2005 18:44:05 +0200
>     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>On Mon, 2005-04-25 at 13:39 -0400, Allison wrote:
>> Good approach.  I enjoy building and winding my own cores
>> be they EI iron or powered iron/ferrite types is part of 
>> that.
>Are these cores suitable for use in making data memories? Ie. could one

No, their characteristics are all wrong. The Cores I refer to are
large by a fact or 15 to as much as 100 time that of cores used for 
memories.

>hypothetically make a core store today, using those cores? Has anyone
>done this? Do the current-day cores have better properties for use as
>memory than the ones used in past-day cores? 

The past day cores were very optimized material and have not seen
any improvement.  

As to making a corestore today it's still possible but the small 
cores needed to attain a 1-2uS cycles time are not common.


Allison