| View previous topic :: View next topic |
| Author |
Message |
fRaSsL
Joined: 31 Mar 2003
Posts: 1570
|
 Posted: Sun Jan 03, 2010 7:00 am Post subject: USSR PCB with many hybrids |
 |
|
I got my hands on this:
Maybe Elar can help here with more information?
Thanks!
Frank
_________________
Frank. |
|
| Back to top |
|
 |
Chiefish
Joined: 23 Sep 2007
Posts: 2153
Location: Northwest N.J. U.S.A
|
| Posted: Sun Jan 03, 2010 7:25 am Post subject: |
|
|
Very cool board, reminds me of the old IBM boards I have seen 
_________________
"The only reason for time is so that everything doesn't happen at once." A.E. |
|
| Back to top |
|
|
frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
|
| Posted: Sun Jan 03, 2010 10:59 am Post subject: |
|
|
Hi!
284YE1A is analog repeater, 217TK1B is RST flip-flop. |
|
| Back to top |
|
|
Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
|
| Posted: Sun Jan 03, 2010 11:32 am Post subject: |
|
|
Nice board. It's probably D/A converter or could even be A/D converter.
228PP2 - primitive D/A converter. Homemade datasheet http://www.155la3.ru/datafiles/k228pp2.pdf
228SA1 - analog comparator
228KN1 - analog switch
243 is rarely used TTL hybrid logic series
243LA2 - 2x 3NAND
243LA4 - 2x 2NAND with expansion
More of 217 series http://www.155la3.ru/k217.htm |
|
| Back to top |
|
|
donutty
Joined: 16 Feb 2008
Posts: 1122
|
| Posted: Sun Jan 03, 2010 12:16 pm Post subject: |
|
|
From datecodes on modules, this is a mid 80's board, but it looks much more old fashioned than that; in very classic Soviet style!  |
|
| Back to top |
|
|
Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
|
| Posted: Sun Jan 03, 2010 12:30 pm Post subject: |
|
|
| Design is probably from around mid 70's. |
|
| Back to top |
|
|
donutty
Joined: 16 Feb 2008
Posts: 1122
|
| Posted: Sun Jan 03, 2010 2:10 pm Post subject: |
|
|
| Elar wrote: | | Design is probably from around mid 70's. |
And if it isn't broken, dont fix it  |
|
| Back to top |
|
|
fRaSsL
Joined: 31 Mar 2003
Posts: 1570
|
| Posted: Sun Jan 03, 2010 2:16 pm Post subject: |
|
|
The little letter tells that it was made 1984. And it's sealed in original package. So if anyone wants to have it, let me know. I don't need it 
_________________
Frank. |
|
| Back to top |
|
|
johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
|
|
| Back to top |
|
|
fRaSsL
Joined: 31 Mar 2003
Posts: 1570
|
| Posted: Mon Jan 04, 2010 7:21 am Post subject: |
|
|
Sorry, Doccy was faster. So it's already gone...
_________________
Frank. |
|
| Back to top |
|
|
monoxrom
Joined: 05 Sep 2008
Posts: 357
Location: Ukraine. Ivano-Frankivsk
|
| Posted: Sun Jan 10, 2010 4:57 pm Post subject: |
|
|
In red circle palladium capacitors 0.1 Kg = 40$
But i think realy price is much more
As for board, more soviet calculators have similar boards.
And more simmilar boards i'm have on my attic, here they do not need anybody |
|
| Back to top |
|
|
doccybrown
Joined: 03 Oct 2005
Posts: 1736
Location: Germany
|
| Posted: Mon Jan 11, 2010 4:48 am Post subject: |
|
|
Palladium capacitors?!? 
Never heard about that kind!
Or do you mean Tantalum?
But Palladium is cool, I like rare shiny metals...
maybe I can boil it out? 
_________________
Ordem e Progresso |
|
| Back to top |
|
|
monoxrom
Joined: 05 Sep 2008
Posts: 357
Location: Ukraine. Ivano-Frankivsk
|
| Posted: Tue Jan 12, 2010 2:52 am Post subject: |
|
|
Yes palladium...
This capacitors and gilded connectors is real curse of soviet computers |
|
| Back to top |
|
|
|
![[ Hidden ]](https://cdn.cpu-world.com/forum/templates/CPUWorld/images/lang_english/icon_email.gif "[ Hidden ]"){kind=icon}
