25" Amplifone/Wellsgardner Vector Monitor Yoke winding and information

This is a very exciting thread. I have a near zero burn 19" G07/K4900 tube fitted to a K6100 yoke, chassis, deflection, hv, and neckboard. It's not assembled yet due to knowing I'll have pincussion issues. The "correct" yoke for this G07 tube would fix that. 😆

Scott C.
 
This is a very exciting thread. I have a near zero burn 19" G07/K4900 tube fitted to a K6100 yoke, chassis, deflection, hv, and neckboard. It's not assembled yet due to knowing I'll have pincussion issues. The "correct" yoke for this G07 tube would fix that. 😆

Scott C.

Maybe. Is this tube a CR23? If it is I might end up with an extra yoke that will work on a 90 degree 19" tube. If I get be results I'm looking for maybe I can send ti to you to see what result you get on the tube your using. Otherwise if the yoke hasn't been removed you can remove just the ferites and send them to me for winding and then assemble the yoke yourself. That might eliminate some convergence issues.
 
That's looking very nice !

The image expands and collapses just like you might expect with the trim pots on the deflection board. And the letters and numbers are very sharp. Not to mention I'm gettin good convergence all the way to the edge. Makes a big difference when the boxes are floating around near the edge or corners. That was my original problem and annoyance when the convergence would float toward the corners and then drift once it was alligned. I'm very happy and so far I can repeat this result. At least twice.
 
Maybe. Is this tube a CR23? If it is I might end up with an extra yoke that will work on a 90 degree 19" tube. If I get be results I'm looking for maybe I can send ti to you to see what result you get on the tube your using. Otherwise if the yoke hasn't been removed you can remove just the ferites and send them to me for winding and then assemble the yoke yourself. That might eliminate some convergence issues.
While that G07 tube (CR23) does still have it's yoke, I do have spare G07 yokes. Getting a drop-in replacement for G07 tubes would be great as there are loads of them around.

Scott C.
 
I'm pretty sure my next tube is considered a "drop in" replacement for a G07 so we'll see what comes of it. The first step to not messing with convergence is NOT removing the yoke unless you just have no choice.
 
So I decided to start from scratch with a "New" tv Set UP with a CR31 Tube. I left the yoke on the tube and removed the ferrites. I then wound them with MAG26 wire (0.36mm or 0.37mm wire) following the current wind pattern 10 wraps then start 30 wraps with space cross over 30 more wraps with space. Then back wind 1 1/2 wraps to beginning of pattern and repeat 30 wraps (2nd layer, 1st layer, 2nd layer, 1st layer, alternating all the way across. Then cross over one wrap and finish out the 2nd quarter 30 wraps alternating. Ending with 10 wraps.
Sorry, just want to check I understand right. Are you saying a single layer of 10 wraps and then 2 layers of the 30, so 70 in total per quarter?

Thanks

Oli
 
Sorry, just want to check I understand right. Are you saying a single layer of 10 wraps and then 2 layers of the 30, so 70 in total per quarter?

Thanks

Oli

NO. Please read carefully.

Pick a starting point on the end of the ferrite. tape your wire down. very close to the end. start with 10 wraps very close to the end. Like an end cap.
Then 1st quarter wrap 30 wraps. cross one turn to 30 wraps for 2nd quarter. this is 1/2 the wind of one ferrite.

one and a half wraps to the beginning of the first 30 then 2nd layer is fill every other gap across the ferrite .

this means another 30 cross then last 30 and then finish with 10 wraps to complete one ferrite.

I believe I stated it more clearly in an earlier post. in the end you will have completed 140 turns with a couple of cross over turns and 1 1/2 turns to start the second layer for one ferrite.
 
NO. Please read carefully.

Pick a starting point on the end of the ferrite. tape your wire down. very close to the end. start with 10 wraps very close to the end. Like an end cap.
Then 1st quarter wrap 30 wraps. cross one turn to 30 wraps for 2nd quarter. this is 1/2 the wind of one ferrite.

one and a half wraps to the beginning of the first 30 then 2nd layer is fill every other gap across the ferrite .

this means another 30 cross then last 30 and then finish with 10 wraps to complete one ferrite.

I believe I stated it more clearly in an earlier post. in the end you will have completed 140 turns with a couple of cross over turns and 1 1/2 turns to start the second layer for one ferrite.
Brilliant, thanks for the clarification. Have got it now!
 
Gave it a try

Not to hijack your thread but you guys got me thinking, I have all these old yokes lying around, gotta give it a go.....Looks like the same one in post 13.

Whats funny about this particular yoke is that the "key" to set the ferrites is off center (see pics) that cost me an almost full wind before I realized that I will need to center these manually.

Anyway, did it as per instructions (wound for a 6100):

26 ga. @ 10-30-30-30-30-10 per ferrite, terminated start to end (A) and start to end (B) and received 1.2ohhms and 0.6 ohms - looks good, just need to test.

Thanks for making this (and other) information available, I never would have attempted this without it.

Jeff
 

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25" Amplifone/Wellsgardner Vector Monitor Yoke winding and information

Anybody want these? They are 100 degree raster yokes from three 25" televisions. Free!

09d008e83d5d62e5e10d472b3c14ee22.jpg
 
I am reviving this thread as I think there is a need for 25" vector tubes and the only solid solution is still the WG6100 yoke. I have a drop in tube and I am working with two different yokes which starting out this week we're wrapped the same with the same results, wiggly numbers and letters, wiggly lines. And when I used the WG6100 yoke looked solid an crisp. So I tried the new wrap for 19" monitors braised off the unwinding of the Amlifone yoke and the picture was square but too small vertically. And a little hard to line up. Seems the yokes want to be really close to the tube. Anyhow I am going to focus on 25" tubes for a bit and try and get rid of my current 25" inventory.
 
Finally got the need and time to really work on this as I need two of these and would like to keep the 6100 yoke for reference or the StarWars.
Starting with the 6100 yoke and one of three tubes which should be a cross reference tube to the StarWars part number I have which is same tube as in 25K8104. The mage is near perfect, geometry is square and all the guns line up in the corners nearly perfect. This is what I will be going for as these are the same current results I am getting with the 19" monitors. Not a cross hatch pattern but it lines up nicely without any strips. This is what we need to reproduce.
 

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NICE!

If I understand you correctly, the gun alignment is good on that Star Trek test. But in the second image, the score is not converged well. Is that a real convergence issue or is it only a camera effect?
 
NICE!

If I understand you correctly, the gun alignment is good on that Star Trek test. But in the second image, the score is not converged well. Is that a real convergence issue or is it only a camera effect?
This image was taken with the yoke just put on the tube no real convergence was performed at this point. I'll follow up with mod information, be patient. As just showing an image, unfortunately I did not take the time to bring up. Cross hatch before I called it a night.
 
Ok here is the current setup we are trying to reproduce.

Pat9000 Dezbaz kit powering a 25" tube with 6100 yoke.

This is near perfect in the middle and very close on the edges. No strips, very basic purity and convergence. No time spent, just reference. Here is the crosshatch for geometry and convergence.
You can see where it is mostly lined up except in the corners and the bottom, but the geometry is correct and should easily line up with strips.
 

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