Author Topic: Lets see your Nixie Tube equipment (Read 121212 times)

TERRA Operative · « **Reply #375 on:** May 29, 2019, 01:15:45 am »

Quote from: Enigma-man on May 27, 2019, 05:26:35 pm

he pulls out what's in the second picture. ARE YOU KIDDING ME ? The service manual for one of the most obscure pieces of equipment. It looked like it
never was opened. I could not, in good conscience, not give the Vidar a chance to be functional.

That's worth scanning to PDF for the archives for sure.

bob91343 · « **Reply #376 on:** May 29, 2019, 03:26:25 am »

This is my EI3000 voltmeter. Rated 0.01% on dc and 0.1% on ac, still works great.

tggzzz · « **Reply #377 on:** May 29, 2019, 08:44:57 am »

Quote from: dexters_lab on October 09, 2015, 07:26:55 pm

Yea i have a soft spot for nixies... so fresh into the lab... a Solartron LM1619 volt meter and the nixies are not the only tubes in it

oh and 1KV on unshrouded banana sockets? i guess things was different back then!

I'll raise you dekatrons plus 200-500V output plus finger accessible plus school equipment... With the EHT switched on, touching the GM socket's centre conductor with a finger causes it to count.

No, you don't feel a shock since the output impedance is ~5Mohm

Enigma-man · « **Reply #378 on:** May 30, 2019, 02:40:02 am »

Wow ! Dekatrons. My favourite next to Nixies.
I sure wish I could find a schematic for a low frequency counter because I have more than a dozen Dekatrons and have
no intention to make shitty Dekatron spinners out of therm.

# bob91343... Very nice to see some rare pieces of equipment.

Enigma-man · « **Reply #379 on:** May 30, 2019, 02:47:33 am »

Vidar 500 Voltmeter revisited.

I got the Vidar 500 fixed last night and here are two pix showing it measuring voltage compared to my Dana 5330
and frequency compared to the HP 5340.
The Vidar had several issues, but no collection of Germanium transistors, resistors and caps was going to defeat me.
It works and that was my goal. The only one left to fix is the Systron Donner 1032 and it will be work again.

tggzzz · « **Reply #380 on:** May 30, 2019, 07:59:33 am »

Quote from: Enigma-man on May 26, 2019, 05:44:26 pm

Back in February this year, my good buddy gave me a Weston Standard Cell. Up until the mid 90's the Weston Cells were the worldwide voltage standard.
on the net. A new Weston Cell was 1.01830 volts. The cell is only supposed to be guaranteed accurate for a number of years but I have read some are still good after many decades.

There are two types of Weston standard cell: saturated and unsaturated, with different voltages and tempco and lifetimes.

Saturated cells are stable for decades (I have one from 1949), have a 40uV/C tempco, are fragile, so are only used in labs. Your image shows one.

Unsaturated cells have lower tempco, are more robust, have a shorter lifetime, and were used in portable equipment.

bitseeker · « **Reply #381 on:** May 30, 2019, 05:10:21 pm »

The Vidar lives!

schmitt trigger · « **Reply #382 on:** May 30, 2019, 05:34:54 pm »

My ultimate idiot box: Nixies, Dekatron, Neon lamps, and a Magic eye. All counting in random sequences.
All synchronized with beeps.

A real mind-relaxing apparatus, very effective for dealing with headaches caused by stubborn people.

bitseeker · « **Reply #383 on:** May 30, 2019, 06:58:03 pm »

Awesome. A video demo is requisite for this curiosity.

schmitt trigger · « **Reply #384 on:** May 30, 2019, 11:57:35 pm »

I would love to share a video, but EEVBLOG doesn’t allow uploading videos?

BTW; I have called this contraption “Der sinnlose Zähler”. The senseless counter. Although I ignore whether my German language skills are good enough and this name makes any sense.

Or perhaps “The ultimate idiot box”, again in German.
Perhaps some native German speakers may suggest a catchy name? That would be appreciated.

bitseeker · « **Reply #385 on:** May 31, 2019, 01:19:33 am »

No problem. Video goes on YouTube. Link to video goes into EEVblog forum post.

greytop · « **Reply #386 on:** September 13, 2019, 09:45:50 am »

I have just dug a Daystrom Schlumberger 1291 out, tried it 30+ years ago, functioned then. Must try it again

mikeinkcmo · « **Reply #387 on:** September 29, 2019, 12:21:10 pm »

I've scrolled through all the pages and haven't seen an HP-312 selective volt meter.

I also have a 5245M counter that I've had for quite a while.

Johnny10 · « **Reply #388 on:** September 29, 2019, 01:45:54 pm »

Now those are cool !

scopeman · « **Reply #389 on:** February 08, 2020, 09:08:49 pm »

Quote from: mikeinkcmo on September 29, 2019, 12:21:10 pm

I've scrolled through all the pages and haven't seen an HP-312 selective volt meter.

I also have a 5245M counter that I've had for quite a while.

Wow I used to use a HP312 when I worked at Western Union in the late 70's before we replaced them with HP3586's.

Sam
W3OHM

video99 · « **Reply #390 on:** March 30, 2020, 10:01:46 pm »

Hello

A while back you mentioned a Fluke 8375A mnultimeter. I'm looking at one of these, there seems to be a power supply problem. I'm sure there should be a regulated output of about 9V from Q6 (the one with the heatsink) but I'm only seeing about 0.9V from there. I've checked pretty much every component on the PSU and replaced all bad ones but to no avail. I don't suppose you have a schematic for the PSU do you? I'm working blind and with the present crisis, finances are tight beyond belief so I can't really buy a manual for a unit which is more of a curiosity than a useful piece of test kit. I would just like to get it to run to show off the display if I can. At the m,oment the machine appears dead though the high voltage for the tubes is present.

Thanks for any help if you can.

All the best,

Colin

colin@video99.co.uk
youtube.com/video99couk

Cubdriver · « **Reply #391 on:** March 31, 2020, 07:48:46 am »

Colin, I *think* I have a manual for an 8375A lurking about somewhere here (I have an 8375A in my to-be-looked-at pile, and am fairly certain that I got a hard copy manual for it). I'll try to find some time to dig for it in the next day or three, and offer what insight I can if it turns up.

-Pat

Martian Tech · « **Reply #392 on:** November 07, 2021, 06:31:24 am »

16 pages and no Heathkit?

bob91343 · « **Reply #393 on:** November 07, 2021, 05:12:49 pm »

EI 3000

Electro Fan · « **Reply #394 on:** November 08, 2021, 04:29:22 pm »

Here is a HP 5327B displaying a 49,152,000 Hz signal from a Leo Bodnar GPSDO while taking a 10 MHz reference clock signal from a BG7TBL GPSDO. When I first got the 5327B several years ago it was missing the 8th tube and an IC so when I found a source I figured I'd go for some spares. The 5327B seems pretty accurate and it is just plain fun to look at.

Johnny10 · « **Reply #395 on:** November 08, 2021, 05:03:05 pm »

You've got to stock up just in case.

Electro Fan · « **Reply #396 on:** November 08, 2021, 07:05:36 pm »

Quote from: Johnny10 on November 08, 2021, 05:03:05 pm

You've got to stock up just in case.

This is what I’m thinking.


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Author Topic: Lets see your Nixie Tube equipment (Read 121212 times)

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