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echo: electronics
to: Jasen Betts
from: Greg Mayman
date: 2004-01-23 08:46:00
subject: POWER SUPPLY

-=> Jasen Betts said to Greg Mayman
 -=> about "POWER SUPPLY" on 01-15-04  07:03.....

 JB>> i32x60 is normally 900x480 pixels (or 800x480), any monitor
 JB>> designed for that resolution or greater shold give adequate
 JB>> performance)
 
 GM> It's not the number of pixels in the video signal, but the size of
 GM> the holes in the shadow-mask in the tube.

 JB> but as long as the holes are small close enough together enough to
 JB> define the pixels all should be fine... my point was I think that if
 JB> the shadow mask distorts the pixels such that the text is hard to read
 JB> it wasn't designed for the resolution it's being used at.

There is in practice a physical limit to the smallness of the
holes in the shadowmask. The Pixels have to be resolved at least
as large as the holes in the shadowmask if you want to reslove
the colours. So if you want a large number of pixels to display
on a shadowmask tube, you need a large tube.

Maybe we are saying the same thing from different points of view.

OTOH you can get higher resolution with a three tube projection
system, in theory at least, but they have a whole swag of their
own problems.

From Greg Mayman, in beautiful Adelaide, South Australia
   "Queen City of The South"    34:55 S  138:36 E

... Don't get stuck in a closet -- wear yourself out.
___ Blue Wave/386 v2.30

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