I think andy nailed it in an earlier post:
Quote:
Originally Posted by andy
It's probably similar to the 7" Chromatron except that it has a delta gun instead of a Trinitron gun. In the 7", the color selection grid is powered by DC and serves basically as a lenticular lens to focus the beams on the appropriate color stripes. The advantage is that no electrons are wasted, but it's a lot more complicated to manufacture.
|
In this design, 3 guns are used rather than applying 3.58 mhz high voltage to the color selection grid near the phosphor.
jr