Quote:
Originally Posted by andy
I think he just meant that it's impossible to do, unlike other brands which all use interchangeable CRTs (eg. you can put a Zenith CRT in a Sylvania TV, or a GE CRT in an RCA TV).
It's a myth that Sony's don't require convergence. Trinitrons are less complicated to converge than a delta gun, but more complicated than a typical in-line gun.
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I was thinking about the time when the Trinitron was first introduced. Decades later, other manufactures caught up to a certain degree but could never duplicate the Trinitron until Sony's Patent expired in 1996.
The Trinitron only requires 6 picture tube adjustment controls compared to 24 in the typical shadow mask of that period. The cathode are in one plane as opposed to different planes in the shadow mask system of that time period. The Trinitron uses no convergence yoke, instead 4 electrostatic convergence plates. Vertical mis convergence is impossible in a Trinitron tube, therefor vertical convergence control is not required. Only small horizontal corrections are needed left and right, also the vertical stripes make beam landing errors less sensitive to the Earths magnetic field.