Quote:
Originally Posted by dtvmcdonald
The key ingredient of real Chromatron is one gun, one cathode, one grid, and dot sequential, which applies to Apple/Indextron too, AND direction to the
vertical stripes not by fine focus and sensing/feedback but active
direction with high RF electric fields at the screen and, produced by grids.
The not really Chromatron KV-7010U has three cathodes and passive (DC)
focus at the screen end by wires. The Trinitron has a much less transparent
mask and no focus, just shadowing, at the screen.
My Indextron is coming back,
I still am looking for a KV7010U.
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The common belief is that the Chromatron was ONLY A ONE GUN CRT. The original Lawrence Chromatron was designed to be one or three guns and one or three cathodes. The one gun design received all the attention because of its simplicity and theoretical perfect registration. Prototypes were tested in both configurations. The original Trinitron Aperture grill is less efficient then the wire grid, but never the less much brighter in its day then a shadow mask from the same time period. (1968) The Trinitrons were recognized for produceing bright well focused, high resolution images.