Plane of core memory

[dwight]

My understanding was that the mercury delay lines needed periodic repairs ( not sure what the cause was but mercury does dissolve into many metals ). If I were going to make a delay line memory, I'd go with the magnetostrictive. These are practical to make. One just needs a little ingenuity and a spool of piano wire.
Dwight

________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Al Kossow via cctalk <cctalk at classiccmp.org>
Sent: Thursday, April 18, 2019 9:42 AM
To: cctalk at classiccmp.org
Subject: Re: Plane of core memory



On 4/18/19 9:30 AM, Chuck Guzis via cctalk wrote:

> Anyone with a Williams tube project?

The 1401 guys at CHM were working on one using a real 701 tube.
I don't think it was ever finished.

@tubetimeus built a small core array with Bulgarian cores
https://twitter.com/TubeTimeUS/status/1053424445463752704

Discussion of the EDSAC rebuild
https://www.youtube.com/watch?v=xGEAPVCuwvY

Haven't heard if anyone has tried to get one of the Russian MR
lines on eBay to do anything, or if anyone has a running Packard-Bell PB-250