neon oscilators ? and the Trautonium

[Martin Czech]

:::Hi,
:::following on from the recent posta about the subject .
:::anyone know where I might find more info on Neon oscilators and their
:::design ?
:::[think they might be called relaxation oscilators ? ].
:::Be interested to know any advantages / disadvantages for use at Audio
:::and LF frequencies .
:::Didn't some early electronic instruments use them ?
:::the Trautonium ? made by Telefunken 
:::regards Peter
:::South London England

I've seen thyratrons in the Sala patent, the counterpart to 
thyristors today.

m.c.