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Re: Electrolytic replacement

 

I've done that too. It can be a lot of work and messy but it is nice once it's finished. I didn't opt to do that for my 7603 as I've not had good luck desoldering the cans when they're intact (too much heat sinking) and I opted to cut them at the pins, desolder, and use adapters. Someone had already lifted some pads so I didn't want to contribute to that if I could avoid it.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "Adrian Nicol" <Adrian@...>
To: "HP-Agilent-Keysight-equipment" <[email protected]>
Sent: Friday, November 24, 2023 11:42:15 AM
Subject: Re: [HP-Agilent-Keysight-equipment] Electrolytic replacement
Don't know it would work with PCB mount caps, but when I restored a
bunch of 1940s-1960s Cossor and Telequipment 'scopes, I found that as
modern caps were so much smaller for a given capacitance/voltage than
the originals it was easy to split the can (round the circumference,
above the 'crimp') and replace the guts with a new cap. Then put a bit
of clear heatshrink tube over the whole can to hold the two halves
together.
I also pulled the insides out of the the Selenium EHT rectifiers and hid
new diodes inside the paxolin tubes.? Looks pretty authentic but without
the risk of smoke and smells!


On 24/11/2023 14:39, jslcanuck wrote:
Hayseed Hamfest manufactures a wide variety of can caps. They did some direct
replacement caps for an HP volt meter I restored.
Interesting - what a peculiar specialty. Looks like they mainly do twist-lock
tabs with
solder terminals, and a few with pigtails. No PCB pins.

Jonathan
Re: HP XY Display PSU Query

 

I think thy is the problem - there is a mil spec JAE connector in the back with pins for the various supply rails. No idea is any of them are AC.
Bw

Tony




On Fri, 24 Nov 2023 at 13:29, Tom Haynes <tomhaynes.net@...> wrote:
Oops, I was mistaken. The 1336S is an external power supply for the 1336A. Does your 1336A have AC and DC inputs?

On Fri, Nov 24, 2023, 9:39?PM Tony <tonycox01@...> wrote:
Sadly there does not seem to be a manual of any kind relating to any of the different versions of the 1336 display - other than the spec sheet from various HP catalogues. Or at least my excavations on the internet have not revealed anything.

And it is not in the Artek manual portfolio either.

Internally they have a very different design to the later 1340A displays that I am more familiar with.

BW

Tony

Re: Electrolytic replacement

 

Don't know it would work with PCB mount caps, but when I restored a bunch of 1940s-1960s Cossor and Telequipment 'scopes, I found that as modern caps were so much smaller for a given capacitance/voltage than the originals it was easy to split the can (round the circumference, above the 'crimp') and replace the guts with a new cap. Then put a bit of clear heatshrink tube over the whole can to hold the two halves together.
I also pulled the insides out of the the Selenium EHT rectifiers and hid new diodes inside the paxolin tubes.? Looks pretty authentic but without the risk of smoke and smells!

On 24/11/2023 14:39, jslcanuck wrote:
Hayseed Hamfest manufactures a wide variety of can caps. They did some direct
replacement caps for an HP volt meter I restored.
Interesting - what a peculiar specialty. Looks like they mainly do twist-lock tabs with
solder terminals, and a few with pigtails. No PCB pins.

Jonathan
Re: Electrolytic replacement

 

Look in the files section here under ¡°Gerber files¡± I uploaded all of my gerbers for our various snap-in to pin adapters. Two of them are measured copies of HP¡¯s adapter plates

steve
Re: Electrolytic replacement

 

Those little adapter PCBs are an interesting spin on it. I'll dig further into that
when I get back on Sunday - maybe they have some that fit these HP Spragues.
Re: Electrolytic replacement

 

If you're replacing a can cap, the ones in the link below work nicely. I just recapped one of my Tek 7603's rectifier/filter boards with them.

For the "square" style, he now has two different configurations; one where the + pin is directly in line with the negative terminals and one where that pin is 0.050" closer to the center of the can's old pins which happened to fit the hole pattern in those boards better. I used Harwin H2105-01 PCB pins to connect the adapter disks to the board as I wasn't too fond of the pins that are provided. It turned out quite nice.



Good luck,
Barry - N4BUQ

Hayseed Hamfest manufactures a wide variety of can caps. They did some direct
replacement caps for an HP volt meter I restored.
Interesting - what a peculiar specialty. Looks like they mainly do twist-lock
tabs with
solder terminals, and a few with pigtails. No PCB pins.

Jonathan
Re: Electrolytic replacement

 

On 11/24/23 09:39, jslcanuck wrote:
Hayseed Hamfest manufactures a wide variety of can caps. They did some direct
replacement caps for an HP volt meter I restored.
Interesting - what a peculiar specialty. Looks like they mainly do twist-lock tabs with
solder terminals, and a few with pigtails. No PCB pins.
Yeah they're primarily aimed at vintage stuff.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: Electrolytic replacement

 

Hayseed Hamfest manufactures a wide variety of can caps. They did some direct
replacement caps for an HP volt meter I restored.?
Interesting - what a peculiar specialty. Looks like they mainly do twist-lock tabs with
solder terminals, and a few with pigtails. No PCB pins.

Jonathan
Re: Electrolytic replacement

 

Hayseed Hamfest manufactures a wide variety of can caps. They did some direct replacement caps for an HP volt meter I restored.?
Re: HP XY Display PSU Query

 

Oops, I was mistaken. The 1336S is an external power supply for the 1336A. Does your 1336A have AC and DC inputs?


On Fri, Nov 24, 2023, 9:39?PM Tony <tonycox01@...> wrote:
Sadly there does not seem to be a manual of any kind relating to any of the different versions of the 1336 display - other than the spec sheet from various HP catalogues. Or at least my excavations on the internet have not revealed anything.

And it is not in the Artek manual portfolio either.

Internally they have a very different design to the later 1340A displays that I am more familiar with.

BW

Tony

Re: paging Reg Beardsly

 

On 11/24/23 07:50, Reginald Beardsley via groups.io wrote:
Not filtering at all. Composing reply. It's a significant project.
Ok, just wanted to be certain. No rush.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: paging Reg Beardsly

 

Dave,

Not filtering at all. Composing reply. It's a significant project.

Have Fun!
Reg
Re: HP XY Display PSU Query

 

Sadly there does not seem to be a manual of any kind relating to any of the different versions of the 1336 display - other than the spec sheet from various HP catalogues. Or at least my excavations on the internet have not revealed anything.

And it is not in the Artek manual portfolio either.

Internally they have a very different design to the later 1340A displays that I am more familiar with.

BW

Tony
Re: HP XY Display PSU Query

 

Thanks Tom - I saw the spec sheet and was intrigued by the high definition of these (albeit quite small) displays.? I was aware that they had some significance for the movie mentioned :-)

BW

Tony
Re: HP XY Display PSU Query

 

¿ªÔÆÌåÓý

Hi Tony,

If you assume that the 1336A and 1336S are similar, then maybe the schematics for the latter can be used as a rough guide, at the very least. A quick look at the connectors supports your initial guess that "R" stands for return.

If you haven't downloaded the 1336S's manual, take a look at it and see if it's at all helpful.

-- Cheers
Tom
-- 
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070
On 11/24/2023 12:20 AM, Tony wrote:

Hi Dave,

No schematics, no pictures, nothing - this XY model (1336A) seems to be a bit of a ghost.

I have not traced the +/-15V circuit yet (or indeed any of the others!)? - that's a job for the weekend coming. I had assumed that the chassis was the ground for the 15V circuits.

Would the 250/21V rails need specific returns if they were (for some reason) AC supplies?

Tony?

Re: HP XY Display PSU Query

 

It looks like the 1336A received a revision to extend the input range for medical use and became the 1336S. There is more info available about the S rev.?

Here is a spec sheet

There are a few details in the march 1986 HP Bench Briefs.

VectorVGA has a scan of a doc listing other models in the 13xx range. None of the links work anymore so here is a copy of the important bits.
Hewlett Packard XY Displays
HP 1208A 5" XY Display Service Manual
HP 1208B 5" XY Display Service Manual
HP 1300A 12" XY Display HP Journal, Operating Supplement
HP 1302A XY Display
HP 1304A 14" XY Display Service Manual, 13XX Spec Matrix
HP 1310A 19" XY Display HP Catalog, HP Journal
HP 1310B 19" XY Display Service Manual, 13XX Spec Matrix
HP 1311A 14" XY Display HP Catalog, HP Journal
HP 1311B 14" XY Display Service Manual, Picture, 13XX Spec Matrix
HP 1317A 17¡± XY Display HP Catalog, 13XX Spec Matrix
HP 1317B 17¡± XY Display Picture, Picture
HP 1321A 17¡± XY Display Service Manual
HP 1321B 21¡± XY Display Magazine Ad, 13XX Spec Matrix
HP 1330A 5" XY Display Service Manual
HP 1331A XY Display Picture
HP 1331B XY Display
HP 1331C XY Display
HP 1331D XY Display
HP 1332A 6¡± Hi-Res XY Display Service Manual, 13XX Spec Matrix, Picture
HP 1333A 5¡± XY Display 13XX Spec Matrix
HP 1335A 4.5" XY Storage Display Service Manual, Picture, 13XX Spec Matrix
HP 1335A/H01 4.5" XY Storage Display Service Manual
HP 1336S 5" XY Display System Service Manual, 13XX Spec Matrix
HP 1338A 6" XY Tri-color Display 13XX Spec Matrix
HP 1340A 6¡± Hi-Res XY Display Service Manual #1, Service Manual #2, 13XX Spec Matrix
HP 1345A 6" XY Digital Display Service Manual
HP 1346A 6" XY HPIB Display Programming Manual
HP 1347A 6" XY HPIB Display Programming Manual


And a neat but of trivia, the 1336A was the hero display in the movie War Games. Do you want to play thermo nuclear war?


On Fri, Nov 24, 2023, 5:20?PM Tony <tonycox01@...> wrote:
Hi Dave,

No schematics, no pictures, nothing - this XY model (1336A) seems to be a bit of a ghost.

I have not traced the +/-15V circuit yet (or indeed any of the others!)? - that's a job for the weekend coming. I had assumed that the chassis was the ground for the 15V circuits.

Would the 250/21V rails need specific returns if they were (for some reason) AC supplies?

Tony?

Re: HP XY Display PSU Query

 

Hi Dave,

No schematics, no pictures, nothing - this XY model (1336A) seems to be a bit of a ghost.

I have not traced the +/-15V circuit yet (or indeed any of the others!)? - that's a job for the weekend coming. I had assumed that the chassis was the ground for the 15V circuits.

Would the 250/21V rails need specific returns if they were (for some reason) AC supplies?

Tony?
Electrolytic replacement

 

The question today happens to apply to my 5385A counter, but I suspect it's a FAQ
(as in: RTFF). Nothing hard about getting a 2200uF 25V radial to replace these HP
0180-3276 parts, but it'd be nice - mechanically speaking - if I could find this kind of
three-terminal version. Can anyone suggest any leads, or do I just have to suck it up
and get the closest-fit two-terminal part I can find?
Re: HP 4145A - Power Transistor Measurement Setup

 

On Thu, Nov 23, 2023 at 05:23 AM, <swake001@...> wrote:
Thank you, this is what I call just in time delivery. Two days ago I managed to repair a HP 4155A, lucky me it was only the power supply, and now I'm looking into acquiring triaxial cables and build some sort of fixture to connect the devices under test. Your example setup will certainly make it easier for me to start experimenting.

I understand the 6024A is an external power supply that can be controlled with an analog voltage, VS from SMU1. Somehow it provides a 12x higher voltage at its output (your multiplication to calculate VCE). How is this 12x factor defined?
WS> The HP 6024A can be remotely controlled by applying a 0-5V voltage to terminal A2. 0-5V corresponds to 0-60V output. That's where the 12x factor comes from.

A4 must represent an output of the 6024A that is in relation with the current on its output. You measure this A4 voltage with SMU-3 and multiply it by 2 to have the collector current IC. How did you identify this 2x factor?
WS> The current monitoring terminal A4 presents a voltage range of 0-5V to indicate a zero to full scale, 10A, current output. Thus, the 2x factor.

I guess these '12x' and '2x' have something to do with how the power supply works, but as this is a completely analog device I don't know for sure.
Page 10 of the Hewlett Packard Journal, October 1982, explains more of the details. I attached it.

Happy experimenting!
Wolfgang

Page 10 from HPJ-1982-10.pdf
Page 10 from HPJ-1982-10.pdf

Re: HP XY Display PSU Query

 

That is how I also read it.
Paul
WB8TSL
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