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Registered Member #64
Joined: Thu Feb 09 2006, 06:25AM
Location: Southampton, UK
Posts: 68
Sulaiman said: Since they're so cheap, get a plastic pipe about 6 feet long, diameter for one piezo-rod, fill it with 120 piezo elements with electrodes at each end strike the ground with the bottom hundreds of kV at the top end
'Magic Staff Of Lightning'
no idea how you avoid 'zaping' yourself though
HV pogo stick
Omicron, continental european countries tend to use a comma instead of a decimal point, so 3,000 euros is really 3.000 euros
Registered Member #177
Joined: Wed Feb 15 2006, 02:16PM
Location: Munich, Germany
Posts: 214
Well, as long as there is someone how can deliver it there I guess. They say that they ship to Non-Europen countries and will strip the 16% taxes off. Write them an email, for details in english.
Registered Member #177
Joined: Wed Feb 15 2006, 02:16PM
Location: Munich, Germany
Posts: 214
I managed to attach the piezos to a small bargraph driver:
(around 1,3MB)
the vid is vcrappy, but I don't hava a integrator here, so one can only see the spikes, which are to fast for my camera to catch/I can't time that correctly.
Registered Member #350
Joined: Mon Mar 27 2006, 05:14PM
Location:
Posts: 106
They are only rated for 1.2kV despite of their size. But thats no problem. If you mechanically deform the piezo to the same extend it gets deformed when 1.2kV are applied then the output voltage will be much higher then 1.2kV. That is unless I didn't understand the basic working principle of piezos correctly. I think a piezo of that size should be able to output several tens of kV easily.
You could build a piezo tesla coil that uses these crystals instead of coils. For that you connect several crystals together to form a rod. Put it in some frame to apply pressure to the rod. Then connect a 1kV AC source to the first of the crystals and if you run it at the resonant frequency the other crystals should output more then 100kV. I think I will get myself some of those piezos to try that.
Try this experiment: Take 2 crystals. Put a piece of aluminum foil in between and one piece at each end. Then put a thick sheet of plastic at each end and squeeze that sandwich in a vice. Connect an ac source with variable frequency to one crystal. You can keep the voltage low here. A few volt are sufficient. Measure the voltage at the second crystal at different frequencies. e.g. 104kHz or 52kHz If you get significantly more out then you put in that proofs a piezo TC could indeed be build.
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Experiments with piezos
