G'day all.

I was wondering if anyone here has any design schematics and data for a 5820 3" image orthicon TV camera tube? I am requesting this information for my future project mentioned a while back which was to build a solid state 3 inch IO camera and whilst tubes often pop up on Ebay, yokes pretty much never show up so I will have to build one myself. Anyways if anyone has any info on 3" IO yoke designs and can supply me with scans it would be much appreciated and I will happily return the favour in some way. I am also after any other yoke designs for all other camera tube types as well too.

I may have mentioned this before, but you could try trawling through the BATC archives, try issues Number 89, 1979 http://www.batc.org.uk/cq-tv/archive/1975.html

There is a lot of stuff going back 60 years.

Brian S

Thanks Brian. I am actually already aware of that CQ-TV issue and the 4.5" IO camera design given and have seen the yoke design and have downloaded that issue and the other issues relating to that IO camera. I will check the other issues too to see if anything pops up.

Why wouldn't IO's have employed low power electrostatic deflection instead of bulky heavy inefficient electromagnetic deflection?

Why wouldn't IO's have employed low power electrostatic deflection instead of bulky heavy inefficient electromagnetic deflection?

I suspect electrostatic deflection would have interfered with the return beam and electron multiplier.