Re: [neonixie-l] Magnetic deflection yoke winding

['John Rehwinkel' via neonixie-l]

>>> Has anyone created new magnetic deflection yokes for crts that are
>>> obtained without them? Seems like an ideal application for 3d printing
>>> but yet a daunting project.
>>> 
>>> Are there any books, recommended project examples, or other resources
>>> that might help in yoke design?
>> 
>> The tubetime.us  website had a nice writeup on
>> making and driving yokes (there was a nice pic of one made out of a
>> toilet paper tube with slots cut in it).
> 
> Ah yes, I know TubeTimeUS, I will check it out.

It looks like the site has just been overhauled and I can't find that article 
any more, but hopefully it's retrievable.

>> It referenced the book Cathode Ray Tube Displays (1966) which has an
>> entire chapter on the theory, design and building of deflection yokes.
>>  It's a great resource,
>> and might be what you're looking for.
> 
> Thanks John. I have the MIT RadLab publication of that title (more like
> 1948!) but perhaps you mean a different one? If so who is the author?

Here are the details:

Edited by Theodore Soller, Merle A. Starr, and George E. Valley, Jr.

Office of Scientific Research and Development
National Defense Research Committee

Published in the US by Dover Publications, in Canada by General Publishing 
Company, Ltd., and in the United Kingdom by Constable and Company, Ltd.

Ah, here we are:

"This Dover edition, first published in 1966, is an unabridged and unaltered 
republication of the work first published by McGraw-Hill Book Company, Inc. in 
1948.
 It is made available through the kind cooperation of McGraw-Hill Book Company, 
Inc.
 This book was originally published in volume 22 in the Massachusetts Institute 
of Technology Radiation Laboratory Series."

So it is apparently the same book you already have.

- John

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Re: [neonixie-l] Magnetic deflection yoke winding

[martin martin]

this site might offer info
https://oscilloclock.com/





~
*mcvei...@gmail.com *


On Thu, Feb 4, 2021 at 1:19 PM Toby Thain  wrote:

> On 2021-02-04 4:10 p.m., Adrian Pardini wrote:
> > Hi there,
> >
> > I don't know where you live exactly but at least here you can roam
> > around old electronic shops and repair sites and pick them up very
> > cheap or free.
> >
>
> Random yokes almost certainly won't fit the tubes I have.
>
> --Toby
>
>
> > Regards
> >
> > On Thu, 4 Feb 2021 at 16:58, Toby Thain 
> wrote:
> >>
> >> Hi list,
> >>
> >> Has anyone created new magnetic deflection yokes for crts that are
> >> obtained without them? Seems like an ideal application for 3d printing
> >> but yet a daunting project.
> >>
> >> Are there any books, recommended project examples, or other resources
> >> that might help in yoke design?
> >>
> >> I own a handful of small (3" rectangular) and large (12" circular) tubes
> >> that really deserve to be operated. Obviously internal electrostatic
> >> platers are a lot easier to deal with. I'm an analog electronics learner
> >> about six years in.
> >>
> >> Thanks
> >> --Toby
> >>
> >> --
> >> 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/141ed8d7-0859-0011-4a3f-23f794e361e8%40telegraphics.com.au
> .
> >
> >
> >
>
> --
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> .
>

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Re: [neonixie-l] Magnetic deflection yoke winding

[Toby Thain]

On 2021-02-04 5:51 p.m., 'John Rehwinkel' via neonixie-l wrote:
> 
>> Has anyone created new magnetic deflection yokes for crts that are
>> obtained without them? Seems like an ideal application for 3d printing
>> but yet a daunting project.
>>
>> Are there any books, recommended project examples, or other resources
>> that might help in yoke design?
> 
> The tubetime.us  website had a nice writeup on
> making and driving yokes (there was a nice pic of one made out of a
> toilet paper tube with slots cut in it).

Ah yes, I know TubeTimeUS, I will check it out.

> 
> It referenced the book Cathode Ray Tube Displays (1966) which has an
> entire chapter on the theory, design and building of deflection yokes.
>  It's a great resource,
> and might be what you're looking for.

Thanks John. I have the MIT RadLab publication of that title (more like
1948!) but perhaps you mean a different one? If so who is the author?

--Toby


> 
> - John
> 
> -- 
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> .

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Re: [neonixie-l] Magnetic deflection yoke winding

[Toby Thain]

On 2021-02-04 4:49 p.m., gregebert wrote:
> I've dissected quite a few TV's in past years, and the deflection yoke
> has a rather complex winding pattern, where the windings are closer
> together at the neck, and spread outward around the funnel-area of the
> tube. If I recall, there are 4 coils at 90-degree intervals, and the
> top/bottom coils are series-connected for vertical deflection, whereas
> the side coils are series-connected for horizontal deflection. Lots of
> pictures online; notice how many styles there are.
> 

Yes, I don't expect it will be easy.

In my case, at least, I want to use the crt as XY and so I will have
symmetrical coils more or less (unlike tv with its differing horizontal
and vertical frequencies).

--Toby


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Re: [neonixie-l] Magic Eye Resources

[Mac Doktor]

> On Feb 4, 2021, at 5:25 PM, gregebert  wrote:
> 
> Be warned that magic-eye tubes, such as the 6E5, have a rather short 
> lifespan, so make sure you power them down when not in-use and keep the 
> brightness as low as tolerable. They are pretty easy to use; I suggest you 
> use a DAC under software-control to drive the grid.


This is exactly the kind of information that I need. Note that I'm not up to 
the task of designing anything at such a low level, especially warm cathode 
tech. I'm looking for things that are more of the "shake the box" kind (to use 
a model kit analogy). By the same token, I don't want to waste money on a piece 
of junk from Asia. There's tons of stuff on eBay but I'd like to hear from 
others who've taken the plunge. 


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] GPS Lib

[newxito]

I got a bunch of cheap GPS modules from China and they seem to use a u-blox 
8 chip. 
Because I don’t like the NMEA spam delivered every second by most of the 
gps modules, I had a look at the UBX protocol… nice! 
I decided to ignore the existing huge libraries and write a lightweight one 
just for the data I need for the nixie clocks. 
During initialization, the library stops the module from sending NMEA 
messages. You can then subscribe to ubx messages (status and utctime) and 
define the interval. Or you can just ask for one message when you need to 
sync your clock.
If someone is interested, I attached the first attempt, still under 
construction.
I’m developing using platformio and esp32 with Arduino framework. I’ve 
never had any coding class, so please don’t expect too much…

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<>

Re: [neonixie-l] Magnetic deflection yoke winding

['John Rehwinkel' via neonixie-l]

> Has anyone created new magnetic deflection yokes for crts that are
> obtained without them? Seems like an ideal application for 3d printing
> but yet a daunting project.
> 
> Are there any books, recommended project examples, or other resources
> that might help in yoke design?

The tubetime.us  website had a nice writeup on making and 
driving yokes (there was a nice pic of one made out of a toilet paper tube with 
slots cut in it).

It referenced the book Cathode Ray Tube Displays (1966) which has an entire 
chapter on the theory, design and building of deflection yokes.  It's a great 
resource,
and might be what you're looking for.

- John

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Re: [neonixie-l] Magic Eye Resources

[gregebert]

Be warned that magic-eye tubes, such as the 6E5, have a rather short 
lifespan, so make sure you power them down when not in-use and keep the 
brightness as low as tolerable. They are pretty easy to use; I suggest you 
use a DAC under software-control to drive the grid.

On Thursday, February 4, 2021 at 1:49:03 PM UTC-8 Terry Bowman wrote:

>
> On Feb 4, 2021, at 4:13 PM, Adrian Pardini  wrote:
>
> Our fellow here Moorrees, has a handful of very nice working circuits
> at https://threeneurons.wordpress.com/magic-eye-stuff/
>
>
> Yes, I've studied his site thoroughly but it's not exactly what I'm 
> looking for (his Dekatron stuff is another matter and I already have his 
> basic spinner kit). There are a bunch of cheap devices on eBay, some 
> including tubes, but I'm not sure what I'd actually end up with.
>
> A quick search with Google turned up lots of old sites and forum posts. A 
> lot of it was outdated or offers for kits that sold out years ago. I'm 
> hoping someone in this group has done some of the legwork for me. Seperated 
> the wheat from the chaff, as it were.
>
>
> I'm working on an overall description of what I'm trying to accomplish 
> with interesting old gadgets and technologies. Someday I'll finish it and 
> post it here.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com/
>
> "Every kid starts out as a natural-born scientist, and then we beat it out 
> of them. A few trickle through the system with their wonder and enthusiasm 
> for science intact."—Carl Sagan, *Psychology Today*, 1996
>
>

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Re: [neonixie-l] Magnetic deflection yoke winding

[gregebert]

I've dissected quite a few TV's in past years, and the deflection yoke has 
a rather complex winding pattern, where the windings are closer together at 
the neck, and spread outward around the funnel-area of the tube. If I 
recall, there are 4 coils at 90-degree intervals, and the top/bottom coils 
are series-connected for vertical deflection, whereas the side coils are 
series-connected for horizontal deflection. Lots of pictures online; notice 
how many styles there are.

-
When I was a technician, I swapped the leads on a co-workers computer 
monitor as a joke and the screen was backwards.

On Thursday, February 4, 2021 at 1:19:23 PM UTC-8 Toby Thain wrote:

> On 2021-02-04 4:10 p.m., Adrian Pardini wrote:
> > Hi there,
> > 
> > I don't know where you live exactly but at least here you can roam
> > around old electronic shops and repair sites and pick them up very
> > cheap or free.
> > 
>
> Random yokes almost certainly won't fit the tubes I have.
>
> --Toby
>
>
> > Regards
> > 
> > On Thu, 4 Feb 2021 at 16:58, Toby Thain  
> wrote:
> >>
> >> Hi list,
> >>
> >> Has anyone created new magnetic deflection yokes for crts that are
> >> obtained without them? Seems like an ideal application for 3d printing
> >> but yet a daunting project.
> >>
> >> Are there any books, recommended project examples, or other resources
> >> that might help in yoke design?
> >>
> >> I own a handful of small (3" rectangular) and large (12" circular) tubes
> >> that really deserve to be operated. Obviously internal electrostatic
> >> platers are a lot easier to deal with. I'm an analog electronics learner
> >> about six years in.
> >>
> >> Thanks
> >> --Toby
> >>
> >> --
> >> 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+...@googlegroups.com.
> >> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/141ed8d7-0859-0011-4a3f-23f794e361e8%40telegraphics.com.au
> .
> > 
> > 
> > 
>
>

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Re: [neonixie-l] Magic Eye Resources

[Mac Doktor]

> On Feb 4, 2021, at 4:13 PM, Adrian Pardini  wrote:
> 
> Our fellow here Moorrees, has a handful of very nice working circuits
> at https://threeneurons.wordpress.com/magic-eye-stuff/ 
> 


Yes, I've studied his site thoroughly but it's not exactly what I'm looking for 
(his Dekatron stuff is another matter and I already have his basic spinner 
kit). There are a bunch of cheap devices on eBay, some including tubes, but I'm 
not sure what I'd actually end up with.

A quick search with Google turned up lots of old sites and forum posts. A lot 
of it was outdated or offers for kits that sold out years ago. I'm hoping 
someone in this group has done some of the legwork for me. Seperated the wheat 
from the chaff, as it were.


I'm working on an overall description of what I'm trying to accomplish with 
interesting old gadgets and technologies. Someday I'll finish it and post it 
here.


Terry Bowman, KA4HJH
"The Mac Doctor"

https://www.astarcloseup.com/

"Every kid starts out as a natural-born scientist, and then we beat it out of 
them. A few trickle through the system with their wonder and enthusiasm for 
science intact."—Carl Sagan, Psychology Today, 1996

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RE: [neonixie-l] Magic Eye Resources

[Tidak Ada]

Actually a magic eye is a bargraph like display. 

There was some time ago an activity display for Windows Task manager. The 
magazine where it was published is Elektor (German and Dutch, but there was 
also an English issue (electronic world?) from the same editor.

 

eric

rVan: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] Namens 
Mac Doktor
Verzonden: donderdag 4 februari 2021 22:10
Aan: neonixie-l
Onderwerp: [neonixie-l] Magic Eye Resources

 

Before the prices rise out of sight, I'd like to have a few magic eye driver 
boards and tubes. Rather than reinvent the wheel, I thought I'd ask you guys 
first. All I need is the ability to feed a signal in and make them do 
interesting things. Most of the kits I've seen are so-called "VU" meters which 
expect an AF signal. I can work with that.

 

I'd like to do this cheaply but reliably. The goal is to have several arranged 
in a group so that I can use them with my Halloween displays.

 

What says the brain trust?

 

 

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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 .

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Re: [neonixie-l] Magnetic deflection yoke winding

[Toby Thain]

On 2021-02-04 4:10 p.m., Adrian Pardini wrote:
> Hi there,
> 
> I don't know where you live exactly but at least here you can roam
> around old electronic shops and repair sites and pick them up very
> cheap or free.
> 

Random yokes almost certainly won't fit the tubes I have.

--Toby


> Regards
> 
> On Thu, 4 Feb 2021 at 16:58, Toby Thain  wrote:
>>
>> Hi list,
>>
>> Has anyone created new magnetic deflection yokes for crts that are
>> obtained without them? Seems like an ideal application for 3d printing
>> but yet a daunting project.
>>
>> Are there any books, recommended project examples, or other resources
>> that might help in yoke design?
>>
>> I own a handful of small (3" rectangular) and large (12" circular) tubes
>> that really deserve to be operated. Obviously internal electrostatic
>> platers are a lot easier to deal with. I'm an analog electronics learner
>> about six years in.
>>
>> Thanks
>> --Toby
>>
>> --
>> 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/141ed8d7-0859-0011-4a3f-23f794e361e8%40telegraphics.com.au.
> 
> 
> 

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Re: [neonixie-l] Magic Eye Resources

[Adrian Pardini]

Our fellow here Moorrees, has a handful of very nice working circuits
at https://threeneurons.wordpress.com/magic-eye-stuff/

On Thu, 4 Feb 2021 at 18:09, Mac Doktor  wrote:
>
> Before the prices rise out of sight, I'd like to have a few magic eye driver 
> boards and tubes. Rather than reinvent the wheel, I thought I'd ask you guys 
> first. All I need is the ability to feed a signal in and make them do 
> interesting things. Most of the kits I've seen are so-called "VU" meters 
> which expect an AF signal. I can work with that.
>
> I'd like to do this cheaply but reliably. The goal is to have several 
> arranged in a group so that I can use them with my Halloween displays.
>
> What says the brain trust?
>
>
> 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
>
>
> --
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
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> email to neonixie-l+unsubscr...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/2649E1FC-EFC8-4323-AA1C-B55F176F50EF%40gmail.com.



-- 
Adrián Pardini

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Re: [neonixie-l] Magnetic deflection yoke winding

[Adrian Pardini]

Hi there,

I don't know where you live exactly but at least here you can roam
around old electronic shops and repair sites and pick them up very
cheap or free.

Regards

On Thu, 4 Feb 2021 at 16:58, Toby Thain  wrote:
>
> Hi list,
>
> Has anyone created new magnetic deflection yokes for crts that are
> obtained without them? Seems like an ideal application for 3d printing
> but yet a daunting project.
>
> Are there any books, recommended project examples, or other resources
> that might help in yoke design?
>
> I own a handful of small (3" rectangular) and large (12" circular) tubes
> that really deserve to be operated. Obviously internal electrostatic
> platers are a lot easier to deal with. I'm an analog electronics learner
> about six years in.
>
> Thanks
> --Toby
>
> --
> 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/141ed8d7-0859-0011-4a3f-23f794e361e8%40telegraphics.com.au.



-- 
Adrián Pardini

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[neonixie-l] Magic Eye Resources

[Mac Doktor]

Before the prices rise out of sight, I'd like to have a few magic eye driver 
boards and tubes. Rather than reinvent the wheel, I thought I'd ask you guys 
first. All I need is the ability to feed a signal in and make them do 
interesting things. Most of the kits I've seen are so-called "VU" meters which 
expect an AF signal. I can work with that.

I'd like to do this cheaply but reliably. The goal is to have several arranged 
in a group so that I can use them with my Halloween displays.

What says the brain trust?


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] Magnetic deflection yoke winding

[Toby Thain]

Hi list,

Has anyone created new magnetic deflection yokes for crts that are
obtained without them? Seems like an ideal application for 3d printing
but yet a daunting project.

Are there any books, recommended project examples, or other resources
that might help in yoke design?

I own a handful of small (3" rectangular) and large (12" circular) tubes
that really deserve to be operated. Obviously internal electrostatic
platers are a lot easier to deal with. I'm an analog electronics learner
about six years in.

Thanks
--Toby

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