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aleph 1166851408|%e %b %Y, %H:%M %Z|agohover
Dear Bob,
My thought on this would be to excite an LC circuit with the PTZ. Then you could be having ringing which would extend the pulse time. The automotive spark coil has ringing, also the stun gun. Maybe you could lower the voltage and increase the current capabilities of the slug.
Lloyd
aleph 1166851445|%e %b %Y, %H:%M %Z|agohover
Dear Lloyd
Good idea. Maybe a magnetic pulseforming network would shape the pulse and maybe a pulse transformer could determine the voltage.
aleph 1170475645|%e %b %Y, %H:%M %Z|agohover
Lloyd told us about zappers, and how it would be good to have a model that did not need a battery and would be very portable. He suggested that something that uses the technology that is used to ignite gas might be appropriate. I do not have a 1000:1 probe for my oscilloscopes, but I was thinking that I could make one and compensate it with a capacitor. Lloyd said that the pulse width of a PTZ spark generator was too small. I am thinking that I may be able to get some guidance from of my friends at church on how to mechanically broaden the pulse with some material like Nylon between the PTZ and the part that strikes it. I may have to find the size and type of material empirically. I envision a device that uses a ratchet to compress a spring that drives a rod that hits the PTZ. A 24 tooth ratchet or gear would give 24 pulses for a revolution of the crank that turns the ratchet. The voltage amplitude would be a function of the spring force and the number of PTZ elements that are in series. I have asked friends to save their empty lighters. One friend said that I did not need to work on this project because the stun gun is now being used. There may be several ways to make the zapper, but my first thought is to make it on a "chassis" of sheet metal which would have a handle and a probe for one person operation.
Bob
Hi Bob! Thanks for the e-mail. The stun guns are pretty expensive and the cheap ones don't hold up in the tropics. I think Aleph is thinking of something much cheaper and simpler. The stun guns require a 9V alkaline battery which is hard to obtain in some areas. Our pilot in Brazil carried one and he used it for snake bits. It takes a knowledeable and responsible person to use it. They want something simple and cheap that nationals, or indigenous folks out in the boondocks can use. I think that a piezoelectric slug would be the answer. Lloyd
