Fusion Message Board

In this space, visitors are invited to post any comments, questions, or skeptical observations about Philo T. Farnsworth's contributions to the field of Nuclear Fusion research.

Subject: Re: Lucky find - H2 thyratron
Date: Apr 18, 9:36 pm
Poster: Richard Hester

On Apr 18, 9:36 pm, Richard Hester wrote:

I hope these tubes are tetrodes. Taming the grid turn on spike in triode thyratrons (30-80% of plate potential) can be a bear, especially in high rep rate systems. Some authors suggest a spark gap, but this might not recover fast enough at high rep rates. Tetrodes are much milder mannered....

Richard Hester

>I attended yet another hamfest this weekend and was fortunate enough to stumble across 2 brand new, sealed in box, large, ceramic, Hydrogen thyratrons.
>The weakest tube is a 30 megawatt unit by EG&G. The ratings in my charts show it to be good for a max plate voltage of 35KV @ 7,500 amps peak pulse current.
>The Bigger unit is a Triton Ceramic unit Which is rated for 40 megawatts, 40 kv @ 10,000 amps. (peak pulse.
>They cost me about 1/200th of their new price.
>These should have lots of reserve if used to pulse a fusor.
>Richard Hull