Rotating the yoke 90°?

Tighe

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Has anyone ever tried this on a monitor? Can you turn a yoke that far and the picture still works?

I ask because I have a project where I would like to display a horizontal game on a vertically orientated monitor. Obviously the image width/height would have to be adjusted.

I can imagine that it might be impossible to converge the image.
 
It could even be easier to converge, as the edges / corners will not have any image present, and that's where the problems usually are

Hope it works for you

Do you plan on making a bezel to hide the top and bottom of the screen?
 
Actually I am thinking I am going to try stretching the vertical and squashing the horizontal to fit the different aspect ratio.

Not sure if I am going to do it at all.
 
If you look at the yoke, you will notice that the horizontal winding (long axis of the tube) has thicker wires than the vertical winding (short axis of the tube). This is to handle the extra power necessary for deflection.

My guess is that your plan will not work as you will be over-driving the vertical winding by at least 50%... but that is just a guess...
 
Woudln't you be overdriving it by about 33% (4/3)? I doubt that it would result in a usable picture, but I would be very interested to see the results.
 
If you look at the yoke, you will notice that the horizontal winding (long axis of the tube) has thicker wires than the vertical winding (short axis of the tube). This is to handle the extra power necessary for deflection.

My guess is that your plan will not work as you will be over-driving the vertical winding by at least 50%... but that is just a guess...

I didn't think he said he was going to change the wiring, I took it as he was just going to rotate the yoke as one piece. So theoretically he should be able to rotate it while keeping the same drive amplifiers connected to the same inductance (vertical and horizontal windings)

I think your right about the convergence, as the phosphor dots are arranged with the shadow mask a certain way. The beam sweeping at a 90 degree pattern to the designed way will probably intermittently hit certain phosphors.

I would be cautious as the anode is specifically placed in reference to vertical and horizontal windings. My guess is it will just go blank after a certain degree of rotation as the beam will no longer scan in relation to the high voltage field. But then again I have never tried it, so I will be curious to know what happens too if you do it. It might work.

Not sure if on a monochrome CRT if would work better or not.
 
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Yes just physically turning the yoke, no wiring changes.

I don't know enough how the shadow mask works to separate out the different beams to hit the right colored phosphorus so you may be right that it might just blank out our be crazy colors.
 
I just looked up how a shadow mask works, and since I am not moving the position of the guns only the yoke the green gun should still hit the green phosphorus. Same with the red and blue.
 
I'm pretty sure it would be fine. I think I've done this messing about, experimenting. Just loosen the yoke screw, fire up the monitor, and give the yoke a twist. Should be fine.
 
if you wanna show a vertical game on a horizontally moundted tube.. it may work but youre gonna either have to love with several inches of black on each side, or a very misadjusted/stretched width.

Id just remount the monitor and make a custom bezel.
 
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