CRT pin-outs and KV ratings?

[Jon A.]

Just wondering about a good place to find these. Would they be in a CRT sub book?

[jr_tech]

Lots of tube data (including CRT) here:
http://tubedata.tubes.se/sheets0.html
jr

[Jon A.]

Looks great so far, thanks.

Darn, practically nothing there on 19V, 23V, 25V, 25S and 25Z tubes, mainly what I'm looking for.

[zeno]

Since you are dealing with modern tubes & I assume saving
them for future subbing.
Almost all in-lines are electrically the same or close.
The KV rating is usually on a tag "do not exceed ## KV"
Save the CRT socket PCB with the jug.
The focus is always separate.
The G-2 is one wire from the FBT & has a 2KV disc cap on it.
The 3 K's each go through a 1K resistor to the 3 output transistors.
The G-1 usually has little going to it.
The 2 filaments are side by side.
You can also look through the neck & see the connections.
The sockets are often marked thats why save the board.
Also mark the jug with make/model/ chassis in case it has to be looked up.
After you see a few you will get good at finding the pins. We had a
Sencore CRT tester with all adapters & I just used the univerasal
almost always to save lookup time..........
Most delta tubes used a socket with harness and they are color coded
and IIRC all have the same pin-out.
Sonys & Zenith EFL's are just a little different.
Hope thats what you wanted to know !

73 Zeno

[Jon A.]

That's just what I'm doing, and fortunately I still have the neck boards for both CRTs, thanks. One CRT's a bit odd, has pins and a keyway big enough to sit against them. The neck board for that CRT has spring contacts. There's also a module that plugs in behind the main neck board with focus and screen controls.

One came from the Hitachi with the unidentifiable chassis. However, I know of a Magnavox T995-02 Star System set that uses the same exact CRT.

[zeno]

Originally Posted by Jon A.

That's just what I'm doing, and fortunately I still have the neck boards for both CRTs, thanks. One CRT's a bit odd, has pins and a keyway big enough to sit against them. The neck board for that CRT has spring contacts. There's also a module that plugs in behind the main neck board with focus and screen controls.

One came from the Hitachi with the unidentifiable chassis. However, I know of a Magnavox T995-02 Star System set that uses the same exact CRT.

Some RCA's had a seperate focus/G2 assy that plugged in. RCA
spring contact jugs in Maggies & Admirals would get bad heater
conections & overheat. Another neck board in later years was for SVM
Scan Velocity Modulation. May as well save the yokes also, if it
goes in the same set can just whip it in, no set-up.

73 Zeno

[Jon A.]

Didn't budge the yokes fortunately, the delta's convergence board and blue lateral are still attached and untouched as well. Hopefully nothing on that one was monkeyed with, the chassis sure was.