Quote:
Originally Posted by zeno
First a correction. Almost all solid state ( SS ) sets do have HV regulation.
Its all done with the main power supply.
Its an interesting project. If you use a modern in line jug I would
try to work with the yoke it has. You may look into Zenith EFL tubes also.
They could light up a room & very reliable.
Another thought was what Panasonic & Sony did in the early 70's. They
had separate hoz sweep & HV stages. Just a cool idea if you want to
be different. It may also make some things easier.
Last note is if you eventually want to build a full blown OTA NTSC set
you can cheat with a Zenith IF strip (SS) & tuner of your choice.
Or if you want tubes look at the Zenith IF's on the sets from abt 1958.
They had 3 6BZ6 or 2 6EH7's & a 6EJ7. Those Zeniths had better
sensitivity & selectivity than ANY TV. They saw things other sets
were blind to.
73 Zeno 
LFOD ! |
I am hesitant to use a vintage CRT because they are rare and therefore should be reserved for restorations. Restorations are paramount for keeping this tech alive. My “Frankenstein” TV will use vintage vacuum tube diodes, triodes, and pentodes… which are less rare, thanks to the tube audio community hoarding them since the 1970s. I also have 6 NOS M34AFA13X02 CRTs, which is another motivator for taking a Frankenstein approach. I keep using the DIY tube audio community as a sort of guiding analogy. They often use vintage triodes with modern loud speakers, and they even use solid state power supplies. They keep everything non-solid state in the signal path. I am taking the same approach, with a 1990s solid state diode split flyback transformer.