When I worked for Texas Instruments in '83, we used 30ga 24K gold
wire... I use plain wire-wrap wire for board repairs, and from the
looks of most of my pre-1990 circuit boards, that's period correct.
The only issue I'd have with that 3M tape would be cutting it narrow
enough to fit.
Douglas's boards are good quality, but IMO their edge connector socket is
inappropriate for DEC boards. It's not deep enough, it does make contact
but on e.g. the extender cards, it doesn't provide enough mechanical
support for the boards, like the old DEC extenders do. I suppose it's what
we're
Do you want something to plug into a backplane, or something to plug a
board into?
If the latter, Douglas Electronics lists a double wide connector with their
part number 72-125C-EL.
http://www.douglas.com/index.php/72-125c-el.html
They also list double wide and quad wide extender cards, which
At 05:33 PM 8/12/2020, Doc Shipley via cctalk wrote:
>When I worked for Texas Instruments in '83, we used 30ga 24K gold wire...
And these days, that's sold by the inch?
- John
Richard Cini wrote:
> Ha, yes, P != W. I have actually found several Bob Meisters, but it's
> like Where's Waldo.
People should have unique names to make it easier for us stalkers!
I have been trying to find Edward H. Black, ex MIT Dynamic Modeling.
systems_glitch via cctalk wrote:
Douglas's boards are good quality, but IMO their edge connector socket is
inappropriate for DEC boards. It's not deep enough, it does make contact
but on e.g. the extender cards, it doesn't provide enough mechanical
support for the boards, like the old DEC
Richard Cini wrote:
> I found this by Robert P. Meister at Battelle Columbus labs.
>
> The source code to the LSI11 says "R.W.Meister" so it's likely the
> same chap.
But P. isn't the same as W. :-(
On 8/13/2020 9:26 AM, Richard Cini via cctalk wrote:
Ha, yes, P != W. I have actually found several Bob Meisters, but it's like
Where's Waldo.
On 8/13/20, 12:04 PM, "cctalk on behalf of Lars Brinkhoff via cctalk"
wrote:
Richard Cini wrote:
> I found this by Robert P.
Ha, yes, P != W. I have actually found several Bob Meisters, but it's like
Where's Waldo.
On 8/13/20, 12:04 PM, "cctalk on behalf of Lars Brinkhoff via cctalk"
wrote:
Richard Cini wrote:
> I found this by Robert P. Meister at Battelle Columbus labs.
>
> The source code
Glen Slick via cctalk wrote:
Do you want something to plug into a backplane, or something to plug a
board into?
If the latter, Douglas Electronics lists a double wide connector with their
part number 72-125C-EL.
-snip-
On Wed, Aug 12, 2020, 9:24 PM Carlos E Murillo-Sanchez via cctalk <
You may want to see if the PLATO terminal documentation is any help, look on
Bitsavers under University of Illinois. Those plasma display power supplies
are hairy devices; the panel is actually a memory device and the power supply
produces a high voltage AC waveform to make that work. Those
Thanks Paul. Yes, I know the old Plato plasma display terminals well, having
grown up with them as
my introduction to computers.
The DEC VR01 is a much newer design, though I'm sure it has some similar
properties, including a
high voltage display. Unfortunately, the display itself never lights
I have a DEC VRE01 terminal that I bought NIB years ago. For those who don't
know about this model,
it has a flat plasma (orange/black) display of about 17". It worked when I
bought it, but now, years
later, I tried powering it up and the light comes on for a moment and goes out.
I suspect a
Thanks Aaron. The DEC display is quite a bit newer than the old Plato design. I
had one of the Plato
terminals at one time and am quite familiar with them. I also had a digivue
standalone display at
one time, but don't recall what I did with it over the course of the years. At
that time, I did
Thanks Lars. Interesting article. According to his bio in Circuit Cellar, Bob
was a programmer for the NASD (National Association of Securities Dealers) in
New York and also wrote PDP-8 and MC6800 simulators. I can find even less on
those two. The source code to the LSI11 says "R.W.Meister" so
Here's a photo of one of the restored PLATO terminals (which had the plasma
display)
Does the power supply for the PLASMA look like the one in this photo of one of
the terminals with the covers off?
- Original Message -
From: Aaron Woolfson
To: paulkon...@comcast.net ;
Hi Tom.
Thanks for your message. Well, the Plasma panels use a pretty unique. I'm
attaching the precise waveforms that the Plasma Panel expects to see in order
to achieve the illumination of the dot. And while this may not be exactly or
precisely what you're looking for, this will explain
Sorry for duplicate emails. Paul did I send you copies of the power supply
manuals?
One more photo of the power supply. I beleieve that the illumination
activation needed to be 109-115 volts, and the sustainer needed to be 74-78
volts.
- Original Message -
From: Aaron
I am crossing my fingers that I stil have the scans of these somewhere, or
photocopies these are copies of the original manuals. DigiVue sent me
their only originals, which I made copies of and sent back to them at some
point
- Original Message -
From: Aaron Woolfson
On 13/08/2020 22:29, Tom Uban via cctalk wrote:
Thanks Aaron. The DEC display is quite a bit newer than the old Plato design. I
had one of the Plato
terminals at one time and am quite familiar with them. I also had a digivue
standalone display at
one time, but don't recall what I did with it
I found/scanned/OCR'd the "Technical data" flyer for HP-UX 7.0 (from 1989).
It's at: http://www.sieler.com/hp/other/hp_ux_7_0.html
Shortly after this, HP quietly dropped the "real time" portion of HP-UX,
and in later years no one at HP seemed to know it had ever been there.
Stan
Carlos E Murillo-Sanchez wrote:
Greetings, everyone...
Does anybody know where I can source card edge connectors (with
eyelets or pins on the other side, hopefully) that would fit
individual wings in a Qbus board?
With regards to the same project, and realizing that the vt100 keyboard
I scanned flyers for the HP terminal line (700/22, 700/41, 700/71, 700/92,
and 700/94), and a price list from 1987.
Info at http://sieler.com/hp/other/hp_terminals.html
Stan
How much current is ir suppose to carry? I'd just replace it with a piece of
wire wrap wire if it is less than an amp.
Of course, I assume you've fixed what ever failed to cause it to blow.
Gold wire is expensive.
Dwight
From: cctalk on behalf of John Foust via
On 8/13/20 9:58 PM, dwight via cctalk wrote:
> How much current is ir suppose to carry? I'd just replace it with a piece of
> wire wrap wire if it is less than an amp.
> Of course, I assume you've fixed what ever failed to cause it to blow.
> Gold wire is expensive.
> Dwight
According to my
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