Quote:
Originally Posted by RCAkid
... I have to wonder why, with all the black & white rectangular sets out there, that the rectangular color set didn't take off. You would think the roundie really, should never have happend.
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Well, consider that the R&D that went into B/W CRTs naturally began with round screens, narrow deflection angle, and big necks. Not until the electronics were fully mature and reliable did R&D advance into developing rectangular, wider deflection tubes with smaller necks. The same evolutionary sequence was naturally followed in developing color CRTs. Advancing from roundies to rectangular/ wider deflection/ flatter screen tubes brought on new challenges with convergence and particularly the pincushion effect. Pincushioning becomes problematic with wider deflection angles and flatter screens-
http://www.tpub.com/content/navyict/14120/141200340.htm which requires dedicated correction circuitry. Thus the big-necked, narrow deflection roundies had to serve sorta as "proof of concept" in color just as had been the case with B/W.
Bill(oc)
09-26-2009, 11:17 PM
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