Re: Making Zappicator with computer and audio software...
Quote: "I just need to know if I have to convert AC to DC?"
Research how zappers work, and find out.
Research what voltage and current you need.
Quote: "Also will a diode make that conversion possible?"
If it is needed:
Yes. Just connect it in series.
You may also consider a bridge rectifier. It would be more efficient, but you may need a different wave form.
Research how diodes and bridge rectifiers work.
Quote: "What kind of diode will I need for it?"
Find out the maximum voltage and current, and get one rated at a higher voltage and current than the maximum it will be exposed to.
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I have doubts about the effectiveness of zappers (I know some will disagree).
I would be looking for other methods to treat a medical condition.
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If I was to make something like that, I would go about it in a different way.