The Thing about these l'il fellers is that you can STILL make yrself a pretty decent collection of 'em, & often as not, they will STILL work..

I love these small sets .They dont take allot of room up.Also they are light on the back.

I REALLY wonder about how much new technology went into that CRT... And HOW did they justify it, seeing as how short the l'il feller was only on the market maybe 18 months..

A 3" B&W CRT in the 80's probably had 0 new tech in it....Sony had been making CRTs like that since the early 60's. They probably grabbed something off the shelf, or refined an existing design to bring it up to current/their standards.

I would count the quarter watt and 180 mw directly heated cathode that Sony used in many portables as somewhat of an engineering break-through... then there is also the "lollipop tube":

http://www.videokarma.org/attachment...4&d=1256351976

I would guess that the engineering costs on those CRTs was significant.

jr

I think most of these small CRTs were originally used as viewfinders in TV cameras in that era and in the 1970's.Some nice engineers were daydreaming and said .We could used these small CRTs to make mini TV sets.Thanks to them.We have these mini TVs in our collection.And no thanks to the clowns that ruin the life of these sets and put them into forced retirement to the recyclers as they came up with the crappy DTV system.

I cant imagine the engineering that went into those 1/2 inch viewfinder CRTs.Microscope work there.Theres some articles that somebody made a 1/2 inch roundie for doll houses.

Most of mine ( the thin ones) are on several shelves in a corner of my display room which would be hidden if the door is opened... but at least they escaped from the shoebox. :)

https://farm5.staticflickr.com/4316/...cfabd1_z_d.jpg

I use a B-T box to feed them OTA signal, mostly from ME TV.

jr

Wow Jr.Sony galore. I love your collection.Mine are scattered everywhere here.I got to round them up and shelf them like that.

Thanks!
Actually there are 5 sets on the shelves that are not Sonys... can you spot them? :)

jr

I was thinking more along the lines of the Eency-Weency color CRTs..Sony,I guess, had their 1 gun set up, but the others had to use their std 3 gun set up. What w/my arthuritic Island-sized paws,its a good thing YrsTrly didn't work on ANY aspect of Eency-Weency CRT development... (Grin)