Kind of cool check it out

[nhuwar]

http://matrixsynth.blogspot.com/2008/02/flame-triode-with-gain-and-intriguing.html


Nick

 

[kevinkr]

Hi Nick,
That was pretty weird... 😀
An alcohol burning open air flame triode which apparently works...

 

[poynton]

I did an experiment while at school in the late '60s.
I got the idea from an American Hobbyist magazine.

It was essentially the same but using a lab. bunsen burner - a more controllable flame.

The metal burner was the 'cathode' - electrons supplied via a wick from a bottle of copper sulphate - nice bule flame

The modulation was supplied via a mains transformer in reverse between 'cathode' and 'grid'.

HT from a lab power supply.

At a school science fair, we placed it in the centre of the lab with a walkway round the outside (to prevent contact with the HT) and hid all the wires so we had a flame playing music !!




Andy

 

[bigwill]

One approach to a directly heated triode! 😀

I wonder how it sounds?

 

[nhuwar]

Well a flame is plasma so it's basically the same as an electron beam. Just would have never thought to try it.



HaHaHa thats funny I never thought about that, Its a REAL dht LOL


Nick