• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Grid - Screen Alignment (X-Rays)

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Ty_Bower said:
Not a 6CK5, is it?

Now you are pulling my leg right?

This was supposed to have been the shot,
not to give it away by showing the lid yet...
 

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There is however extensive shielding between the plate and
screen connections on one side, G1 and cathode on the other.
That shielding extends (externally) right through to the socket.
Metal partitions separating the relevant areas...

Zobsky's socket looks like it must have come from a tank...
Spring loaded trap door and everything. Simply brutal...
I need to shoot that with a regular camera at some later time.

Or maybe its plate and G3 on one side? I'm not too sure.
No problem the spec sheet can't sort out.
 

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While I'm enjoying your photos, I'm simultaneously wondering if you have to wear one of those lead vests you get at the dentists office and being glad I'm not anywhere near the infernal machine that must be taking them.

I always was suspicious of the (often rather cute) dental hygienist who would put the film in my mouth, then hide around the corner while the x-ray gun was pointed at my head.
 
Ours has a little more shielding than this one (I hope).
Still, goes right through gold... If gold won't stop it?

Its a big metal box, like a safe. Presumably with lead
walls? Everything is remote control. There is however
a glass window less than an inch thick, thats scary...

The Xray tube is permanently aimed straight up.
Target is up in the lid of the machine somewhere.
Its an apronless wonder...

There is a cool jig inside. A drill chuck of sorts, and
it can hold what looks like a Panavise clamp. Turn
the board at angles to inspect BGA attachments.

For the tubes, I just use a flat tray and something
like an antistatic glove wadded up to keep it from
rolling around when the tray moves over the Xray.
Its stationary when it takes the picture, its not like
a scanner or anything...
 

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Those wrinkles were probably just to keep the plate from warping out of shape too much when the tube is getting hot.

The fins were partly for heat sinking via radiation, and as a mechanical stiffener.

Noticed that they didn't worry about getting the heater wires evenly spaced inside the cathode. I suppose cathodes were made of metal that was good at thermal conductivity, so the heat would spread evenly.
 
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