Am I the only one who is mildly annoyed at all the various things with
"pdp" in their model names that have nothing to do with older computers
>from DEC? Compaq and Panasonic seem to be the worst, naming memories,
power supplies, and toner cartridges with pdp-blahblahblah.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
>
>> I'm looking for a flyback transformer for a VT220 - I'm in Dublin, Ireland.
>>
>> As far as I can tell, there are at least two different types but hopefully
>> only the mounting arrangements differ.
>
>I did some research on this a while back. In one model the flyback is an
>easy field replace unit but in the other model the flyback is soldered
>to the power board.
>
Mine is soldered to the board but I'm happy enough to adapt the other type
to fit if it's the only one I can get. The other components seem to be the same
so I am hopeful that the transformers do not differ electrically.
Regards,
Peter Coghlan.
On 2011-05-22 22.54, Roger Pugh<rogpugh at mac.com> wrote:
> On 05/22/2011 10:15, David Griffith wrote:
>> > I was looking around for pictures of PDP11 front panels and stumbled
>> > across this page. I think mass quantities of alcohol were involved.
>> > Have your eyebleach at the ready.
>> >
>> > http://www.schlabonski.de/zwiebeltuete.html
> OK... own up.. Who has a PDP in their bedroom??????? LOL
I used to live with a PDP-8/A in my bedroom for about 10 years. Running
24/7 for lots of those years...
Nowadays, I'm more lazy, and only have a PDP-11/93 in the bedroom.
The rest of my machines are in the cellar.
Johnny
>
>PS Later on VT 100's and 220's will be going. Other equipment such as 8"
>floppy drives and media.
>
I'm looking for a flyback transformer for a VT220 - I'm in Dublin, Ireland.
As far as I can tell, there are at least two different types but hopefully
only the mounting arrangements differ.
Regards,
Peter Coghlan.
> From:?Dennis Boone <drb at msu.edu>
> Date:?Tue, 17 May 2011 13:10:04 -0400
> The CPU boards are in the upper backplane, the two or three boards
> connected via top-hats. ?They'll have a label on the back edge giving
> the board model number. ?I can probably look them up from that.
>
> The numbers will be in one of two formats: 9999-999, or TLA10999-999.
Upper CPU Board, P/N 6282-401
Lower CPU Board, P/N 6281-401
Upper Two Memory Boards, P/N 12512-E8
Middle Two Memory Boards, P/N 7615-902
Lower Two Memory Boards, P/N 230-010-904
I/O Boards
2034-901
TLA10019-0012
2302-004
4005-901
2384-004
2301-901
In a box
6105-402
Pictures and part numbers of the boards are at:
https://sites.google.com/site/ricmwarehouse/Home/equipment/prime-computer-s…
It would be nice if you could also identify the memory and I/O boards.
Thanks for your help. There doesn't seem to be much hardware
documentation available for Prime systems.
--
Michael Thompson
Once again, I'm checking around to see if anyone has a pdp 11/70 front
panel with bezel they'd be willing to sell or trade. I have some IMSAI
front panels, an Altair or two, and several complete S100 systems to offer
in trade.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
> Alas they are not standard M3. After measuring up some of the exisitng
> screws, they appear to be 3mm in diamter, 0.6mm pitch (standard M3 is
> 0,5mm pitch). A look in a 1943 Machinery's Handbook suggests this is a
> French metric thread.
Maybe wrong side of the pond but: Is it possible that they are 5-40 thread? (3.1mm major diameter, 0.635mm pitch).
5-40 is still common today on barrier strips and I know was even more common on US phone and telecom equipment from 60, 70 years ago.
I would not be surprised if barrier strip screw sizes had crossed the pond 70 years ago. Reminds me of the Russian hi-tech chilled water cooling unit we had delivered in the 80's, we thought from the drawing it had some funky metric thread and we called around to all the US metric specialty houses without luck, before we figured out that it was just standard garden hose thread :-) !
Tim.
On 2011-05-21 19:00, Tony Duell wrote:
> I am repariign an old French office telephone at the moment, It is
> missing a number of screws, whih looked to me M3. I therefore
> (incorrectly) assmed there'd be no problem replacing them.
>
> Alas they are not standard M3. After measuring up some of the exisitng
> screws, they appear to be 3mm in diamter, 0.6mm pitch (standard M3 is
> 0,5mm pitch). A look in a 1943 Machinery's Handbook suggests this is a
> French metric thread.
It is a French telephone after all ;-)
Some quick Googling on French sites tells me that this is an old standard ("S.I.") which does not seem to be used any longer, not even in France.
This is a table of those threads:http://www.cijoint.fr/cj200809/cijkUPkub5.jpg
They do not seem to be easily obtainable, not even in France. You will probably have to make them yourself, unfortunately.
/Jonas
Hi! All the S-100 Console IO and S-100 4MB SRAM/FLASH PCBs are gone. If
you were looking to get one please let me know and I will add you to the
waiting list for the next batch.
I still have a couple S-100 parallel ASCII keyboard interface, about ten
S-100 EPROM/SRAM/EEPROM/FLASH, and a whole bunch of the S-100 Dual Serial
IO, USB, and voice synthesis PCBs left.
The good news is I am steadily plowing through the stack and getting these
boards out to their builders.
The next new boards will be the S-100 IDE V2 (improved dual IDE), S-100 8086
CPU, and S-100 6502 CPU. These will probably be done in the next few weeks.
Please contact me at LYNCHAJ at YAHOO.COM if you have any questions. Thanks
and have a nice day!
Andrew Lynch
