Resonance Frequency Concept

[fritz]

There are quite nice DDS Chips from Analog Devices,
for example AD9833 - as very basic / Cheap device.
This stuff works up to 20MHz for sine/triangle.
Its also possible to use multiple DDS up to
some 100reds of MHz.
For similar experiments - I wanted to build
such synthesizer - even capable to work in different
time domains (means can be tuned to even irrational
beat frequencies) with multiple tuned TCXCOs.

The original plan was to build a water reactor with
multiple piezo tabs to investigate dissociation a´la
Keely.

What I figured out so far is that I need a carries frequency
about 2Mhz...
The pain is that I need an Amp with a Bandwith of some
MHz and some hundred volts.

If you can give me an Idea of the signals/ power you need -
maybe I can build something with "dual use";...

rgds.

[lancaIV]

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But their ,different, technologies also serve for "music instruments"

S
  CdL

[fritz]

I think the acoustic resonance of the plates is called cavitation, it enhances the dissociation.

As far as I know - cavitation is the effect that water switches from liquid to gaseous state
if you exceed certain pressure.
This happens for example if you drive a water propeller above rated rpms.
The cavitation bubbles are quite aggressive and crack the edges of the propeller.

In case of cavitation - there would only be steam bubbles, no hho.

What I´ve seen so far from AC electrolysis - with different frequencies - that there are
only bubbles if there is an (at least intermittend) DC compound.
Things will start to be interesting using to almost identical frequencies with slow beat
frequencies.

With a heavily distorted / fuzzed / compressed guitar sound - you should be able
to generate such "intermittend DC".

I think that cavitation plays some role in the Meyer tube setups - not as direct hho
generating effect -but thru means of effect to ease dissociation.

rgds.

[fritz]

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S
  CdL

mhh - would think that realtime compensation is somhow state of the art.
Everyone does it - and it´s quite difficult verify that you use certain
transformation table.

[Farlander]

Link is broken...

http://www.edn.com/article/CA236418.html

I am trying to build a 500khz square wave generator... I think square wave is key to the step charging effect, or for switching a mosfet.

for example AD9833 - as very basic / Cheap device.
This stuff works up to 20MHz for sine/triangle

The problem with sine and triangle is you need a comparator or op-amp to turn the signal into a square wave using a reference voltage.  They are slow

Here is the wave I'm trying to emulate... it needs to be solid state, and analog, and eventually work with a feedback mechanism to determine resonant frequency.  Regarding resonance-- what is the difference between a tone and a pitch?  You can clearly hear two different sounds in the video when the signal pulse width and frequency are adjusted.  I think the gating, (pulse "packet" width) affects the acoustic resonance of the tubes and should be adjustable within the audio frequency range.  The shorter "pulse" is most likely the resonant frequency of the LC circuit, and should be mhz or whatever adjustable.