27 May
2013
27 May
'13
7:18 a.m.
On 5/27/2013 3:33 AM, Dave wrote:
These are almost certainly pulse transformers, not
"chips" as such, so
real miniature transformers. Try a google search on "core memory pulse
transformer" here are two I found usefull.
http://www.dtic.mil/dtic/tr/fulltext/u2/045016.pdf
https://sites.google.com/site/wayneholder/one-bit-ferrite-core-memory
Given that I wonder if its possible to salvage the original "innards"
and mount them on a 16-pin dip carrier. Have you tried opening one up or
are they fully encapsulated in a solid material. If they are solid is
there enough material left to solder to a 16-pin carrier. I think photos
would help. Finding modern replacements sounds fun and expensive (about
$5 min).....
Dave
G4UGM
Hammond transformers sells pulse transformers.
Ben.