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Old 14th February 2008, 12:19 PM   #1
nhuwar is offline nhuwar  United States
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Default Kind of cool check it out

http://matrixsynth.blogspot.com/2008...ntriguing.html


Nick
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Old 14th February 2008, 04:36 PM   #2
kevinkr is offline kevinkr  United States
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Hi Nick,
That was pretty weird...
An alcohol burning open air flame triode which apparently works...
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Old 14th February 2008, 05:40 PM   #3
poynton is offline poynton  United Kingdom
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Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)
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 !!




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Old 14th February 2008, 08:12 PM   #4
bigwill is offline bigwill  United Kingdom
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One approach to a directly heated triode!

I wonder how it sounds?
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Old 14th February 2008, 08:16 PM   #5
nhuwar is offline nhuwar  United States
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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


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