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I might be completely wrong here but do Marx generators (capacitor diode chains) have any relevence for producing HV pulses for transducers?
Has anyone looked at this.....Sture?
Has anyone looked at this.....Sture?
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Re: High voltage generation
Hi Firgus
I might be wrong here but I think the "cap/diode chain" produces a DC output and you want a AC output to generate the ultrasound through the piezo-elements.
Peter -
Re: High voltage generation
Have a look at "Stungun" or "Taser" schematics on Internet.
I used a simple schematic to produce the needed 800 VDC.
Hope this helps.
Best regards, JanComment
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Re: High voltage generation
Jan,
I guess you use a transformer in your design. If yes where did you get it?
I've been looking high and low but can seem to find one!
/PeterComment
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Re: High voltage generation
Yes, there is a transformer in it.
I just used one I had lying around.
Most small transformers will do, it must just stepup the the voltage.
With the frequency of the oscillator you can adjust the output voltage.
I am not at home at the moment, otherwise I could send you the schematic for the oscillator.
I remember I found thbe schematic on Internet and it is consist only of a few parts.
When you look for Stungun, Taser etc you should find many schematics.
On the URL below you see 3 schematics.
I build one similar to the middle one described here and it outputs 800V (add a capacitor in the output as buffer.)
http://www.personalarms.com/schematics.htm
Best regards, JanComment
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