Using a hydrogen Thyratron tube to switch a Tesla Coil. The Thyratron tube replaces the noisy spark gap.
A vacuum tube tesla coil built around the Russian tetrode GI-30. My first VTTC and my first vacuum tube circuit, and some very rewarding results.
My DIY PFN for a relaxation oscillator using a hydrogen thyratron.
An article on Thyratrons and a film showing three energized tubes : the 714, the 309/FG17 and the ELC1B.
An article on various high voltage sources. Includes schematics, construction details, high resolution images and videos.