Quote:
Originally Posted by cbenham
About 10 years ago I wanted to build a color wheel TV. I had pieces of an old Col-R-Tel unit but not enough to make a system. I also wanted to make something that would look really good with lots of resolution and less flicker than the Col-R-Tel, so I have worked on this project off and on, revising and improving it to the point where it now runs 640 X 480 @ 90 progressive frames per second [30 RBG color pictures per second] and has subjectively about the same amount of flicker as a PAL TV set. It is still a work in progress and I would really like to increase the vertical rate to 120 or 144 or maybe 180 frames per second. This gets difficult, but not for the reasons you might first think. It's not the wheel or the motor or the video, it's the monitor.
I can't find a nine inch monitor that will operate at this high a display rate.
I can spin the wheel fast enough and make a video signal that fast but can't find a 9 inch CRT monitor that will diosplay it.
I will probably have to build another set with a larger PC color monitor [with it's RGB inputs all tied together to make a monochrome picture] but that also means building a large 36 inch diameter color wheel for it as well. That will be more fun anyway.
Attached is a photo of the present 9 inch wheel set from the top rear.
Cliff
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Beautiful work!
Have you any shots from your tv?
Flicker from a PAL TV is good for me, pheraps because i don't know the 60 Hz flicker.
Do you know well PAL's performances?
And finally, in your opinion, a wheel-based tv set can display a decent PAL picture?
Thank you.