Re: [neonixie-l] Re: Help with 12" monochrome CRT circuit TDA1175/TDA1180

[Paolo Cravero]

Hello.

On Sat, Apr 22, 2023 at 5:58 PM gregebert wrote:

> I found this online (service manual for Ball Brothers video monitor). At
> the end of the document is a schematic, and you can see the pinout numbers
> (for the 10-pin card-edge connector) called-out on the schematic. For
> example, pins 1 and 10 are GND, 2,3, and 4 are for the external brightness
> control.


This reference, together with the Omni Vision PDF I had found, confirm what
the previous owner told me: the pinout in the card connector is
non-standard (mixed-up). Regardless, I've identified where signals are
supposed to go. It's just that I am missing one of the sync lines. The
device has certainly been in use since there are signs of phosphor burn.

Meanwhile I have found a better source of composite video, that is
[video]cameras from 2000's, which my current TV displays properly and I'll
feed it to the monitor circuits as soon as I can get it from the storage
room to the lab desk. Then I will see if that is enough or I need a sync
separator with LM1881.

Will post updates,
Paolo

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[neonixie-l] Nixie Tube Modem Test Set

[Mac Doktor]

Man, these are some tiny Nixie tubes:

https://www.ebay.com/itm/234984502416 


How many are in there? It looks like three (with zero being a possibility). The 
unit is pretty wide and it's hard to picture the scale.


Terry Bowman, KA4HJH
"The Mac Doctor"

https://www.astarcloseup.com

“...the book said something astonishing, a very big thought. The stars, it 
said, were suns but very far away. The Sun was a star but close up.”—Carl 
Sagan, "The Backbone Of Night", Cosmos, 1980


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[neonixie-l] Re: Nixie Tube Modem Test Set

[Dekatron42]

To me it looks like there are three B54XX-something Burroughs Nixies from 
the looks of the sockets.

/Martin

On Sunday, 23 April 2023 at 18:28:22 UTC+2 Mac Doktor wrote:

> Man, these are some tiny Nixie tubes:
>
> https://www.ebay.com/itm/234984502416
>
>
> How many are in there? It looks like three (with zero being a 
> possibility). The unit is pretty wide and it's hard to picture the scale.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> “...the book said something astonishing, a very big thought. The stars, it 
> said, were suns but very far away. The Sun was a star but close up.”—Carl 
> Sagan, "The Backbone Of Night", *Cosmos*, 1980
>
>
>

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Re: [neonixie-l] Nixie Tube Modem Test Set

[Mac Doktor]

> On Apr 23, 2023, at 1:45 PM, Dekatron42  wrote:
> 
> To me it looks like there are three B54XX-something Burroughs Nixies from the 
> looks of the sockets.

I looked at the photos and never spotted the tubes! This thing is big on the 
inside.


Terry Bowman, KA4HJH
"The Mac Doctor"

https://www.astarcloseup.com

"If only you could see what I've seen with your eyes."—Roy Batty, Blade Runner

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Re: [neonixie-l] Nixie Tube Modem Test Set

[Audrey]

I think they're zm1000

On Sun, Apr 23, 2023, 1:48 PM Mac Doktor  wrote:

>
> On Apr 23, 2023, at 1:45 PM, Dekatron42  wrote:
>
> To me it looks like there are three B54XX-something Burroughs Nixies from
> the looks of the sockets.
>
>
> I looked at the photos and never spotted the tubes! This thing is big on
> the inside.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> "If only you could see what I've seen with your eyes."—Roy Batty, *Blade
> Runner*
>
> --
> You received this message because you are subscribed to the Google Groups
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to neonixie-l+unsubscr...@googlegroups.com.
> To view this discussion on the web, visit
> https://groups.google.com/d/msgid/neonixie-l/3AABE121-1A2D-4F54-9B2F-E8ED0A4F87CE%40gmail.com
> 
> .
>

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