I've seen the one where the French guy makes one but not this one before.
This bloke makes a "C" type triode.
It's a long video so be patient, I think it's worth a watch all the way through although it might appear to be a bit slow at the start.
I like the way he checks for vacuum leaks and the valves transconductance before he seals the envelope and fires the getters....
https://www.youtube.com/watch?v=GAMRHcbE3g0
Lawrence. EDIT: His other videos might be worth looking at.
This bloke makes a "C" type triode.
It's a long video so be patient, I think it's worth a watch all the way through although it might appear to be a bit slow at the start.
I like the way he checks for vacuum leaks and the valves transconductance before he seals the envelope and fires the getters....
https://www.youtube.com/watch?v=GAMRHcbE3g0
Lawrence. EDIT: His other videos might be worth looking at.







