[preisschild]

Yeah the tube is essentially a large capacitor :P

I also learned electronics by shocking myself often

[fennecbutt]

It's not the tube (which is just a chamber for an electron gun. It's the high voltage capacitors used to hold charge for the supply driving the electron gun.

[userbinator]

It's the tube itself which forms the capacitor. I'm not aware of any sets that used a separate capacitor across the final anode voltage.

[nojvek]

You either learn by shocking yourself, or die trying.

The survival selection is real in electronics.