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  • Build a World's Smallest Electronic Shocker!

    Re:your question of April 7 2017: I don't have the schematic in front of me, so I can't accurately answer your question, + I don't know what your intended end-use is. If you're looking for a "just a parlor-trick" kind of thing, it's "limit the input power, limit the output power, & if it doesn't hurt YOU, it shouldn't harm anyone else", BUT, if you're looking for a "stun-gun" kind of output, (that'll go through 8 layers of heavy steer-hide & knock whoever's wearing the jacket flat, or throw them across the room), then it's far better to buy one "ready-made". There are sources that sell that kind of thing for self-defense use, (some also have different kinds of bright lights at the "business-end"), which may or may not be legal w...

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    Re:your question of April 7 2017: I don't have the schematic in front of me, so I can't accurately answer your question, + I don't know what your intended end-use is. If you're looking for a "just a parlor-trick" kind of thing, it's "limit the input power, limit the output power, & if it doesn't hurt YOU, it shouldn't harm anyone else", BUT, if you're looking for a "stun-gun" kind of output, (that'll go through 8 layers of heavy steer-hide & knock whoever's wearing the jacket flat, or throw them across the room), then it's far better to buy one "ready-made". There are sources that sell that kind of thing for self-defense use, (some also have different kinds of bright lights at the "business-end"), which may or may not be legal where you are, for very little, relatively speaking. Since I obviously don't get on here much, it'd be better to ask your question to the people who ARE "paid-members" on here, & tell them what you want to DO with the thing; that should get you a lot more help than I can give you, other than telling you that if you're looking for something in either the "parlor-trick" OR the "stun-gun" capacity, the places I get a lot of my inexpensive ready-made stuff are "geek.com" & "wish.com". At the low prices they charge, you could get something from them, & see how a commercially-made unit is built, & then make your own based on one of those; just don't break any laws or hurt anyone with anything, & you should be OK to go.Sorry I can't be of more help. (Springtime cleaning & all of that).Cheers, Phoenix N.

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  • Build a World's Smallest Electronic Shocker!

    Very true; one of the best-known pix of Tesla sitting in his lab with zillion-volt arcs flying everywhere around him WAS indeed "staged", at the request of the photographer. He had the equipment shut off, & the lens-cap was removed for a moment while N.T. was sitting in a chair reading a newspaper; then, he & the chair were removed, the power was applied, & the arcs flew while the lens-cap was again removed for a very short instant, resulting in the double-exposure we've all seen so many times. (If the chair hadn't been removed for the 2nd part of the film-exposure, the arcs would have hit it, & the illusion would have been an obvious 'fake'.) There were also only one or two photos of N.T. drawing an arc to his finger by pointing at the torus of a ("Genuin...

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    Very true; one of the best-known pix of Tesla sitting in his lab with zillion-volt arcs flying everywhere around him WAS indeed "staged", at the request of the photographer. He had the equipment shut off, & the lens-cap was removed for a moment while N.T. was sitting in a chair reading a newspaper; then, he & the chair were removed, the power was applied, & the arcs flew while the lens-cap was again removed for a very short instant, resulting in the double-exposure we've all seen so many times. (If the chair hadn't been removed for the 2nd part of the film-exposure, the arcs would have hit it, & the illusion would have been an obvious 'fake'.) There were also only one or two photos of N.T. drawing an arc to his finger by pointing at the torus of a ("Genuine") operating Tesla Coil, & then pointing toward someone else in the room, & it would appear to go "through" several people before either finding a ground, or just "dying out". Samuel Clemens, (a.k.a. "Mark Twain"), was said to have greatly enjoyed taking part in this specific "parlor trick". Phoenix N.

    Sounds like we may have more in common than I'd first thought. I knew OF a "J. T. McFadden", (or "MacFadden"?), "back in the day", when I was doing satellite earth-station work in Rockville Maryland. (Would have been in the later half of the 1980's.) Did you happen to know a "J. Draper" ? (NOT the one who kept getting busted for "fone phreaking")... Just curious. And you really "hit it on the head" about "Hams" doing things before anyone else, most of the time; although to whoever said they'd thought that Marconi had "taken Tesla down a peg", or something like that, I do recall that Marconi was found by the Supreme Court, around the mid-1960's, I think, to have indeed infringed on at least 16 of N. Tesla's ...

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    Sounds like we may have more in common than I'd first thought. I knew OF a "J. T. McFadden", (or "MacFadden"?), "back in the day", when I was doing satellite earth-station work in Rockville Maryland. (Would have been in the later half of the 1980's.) Did you happen to know a "J. Draper" ? (NOT the one who kept getting busted for "fone phreaking")... Just curious. And you really "hit it on the head" about "Hams" doing things before anyone else, most of the time; although to whoever said they'd thought that Marconi had "taken Tesla down a peg", or something like that, I do recall that Marconi was found by the Supreme Court, around the mid-1960's, I think, to have indeed infringed on at least 16 of N. Tesla's Patents, just as N.T. had claimed. When Albert Einstein had been asked "What's it like to be a genius?", Prof. Einstein replied "I wouldn't know; I think you should ask Nikola Tesla that question." Says a lot... :) N3VQK

    I don't recall if this project says what the freq & output current are, so I can't give you a simple "yes" or "no" as to your question. The simple formula for figuring out the current, is to know what the output impedance is, & then take the output in Watts & divide it by either the square of the impedance OR the EMF in Volts, & you'll get the current in Amperes. (There's another formula for figuring the output current from Power in Watts divided by the EMF in Volts & get something like the Resistance (Impedance) squared, or something like that; I forgot exactly what that formula is, at the moment, but if the output current, (in milli- or micro-amps), is kept low, & the frequency is around the 15kHz-20kHz range, it SHOULD be safe. Look up the...

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    I don't recall if this project says what the freq & output current are, so I can't give you a simple "yes" or "no" as to your question. The simple formula for figuring out the current, is to know what the output impedance is, & then take the output in Watts & divide it by either the square of the impedance OR the EMF in Volts, & you'll get the current in Amperes. (There's another formula for figuring the output current from Power in Watts divided by the EMF in Volts & get something like the Resistance (Impedance) squared, or something like that; I forgot exactly what that formula is, at the moment, but if the output current, (in milli- or micro-amps), is kept low, & the frequency is around the 15kHz-20kHz range, it SHOULD be safe. Look up the basic formulas in an "Electronics-101" book, & you should find what you're looking for. (I don't see my "go-to" book to quote the numbers from to give you, or I would.)Happy playing, & be careful! Phoenix_NightOwl(P.S.: you can make a simple "AC voltage up-converter", with an inexpensive "speaker output transformer" from Radio Shack or similar; the kind that average about 10k-ohms CT (Center-Tapped) on one side, & 8-ohms on the other; put an appropriate resistance in series with it, & feed around a 15kHz-20kHz signal into the 8-ohm ("output")-side, & the 10k-ohm "input"-side, (used here as the "output"), will step up the 18kHz-average freq by enough to "get your attention". We used to use those to keep our tool-boxes closed; since the 10k-ohm side of the transformer had a center-tap, it made an ideal component to be driven by a simple 2N2222A transistor or NE555 timer ckt. Just a thought.) Phoenix N.

    Yes, but can you tell a Phillips from an "ISO" screwdriver, or screw? (Hint: the "ISO" screw has a little "dot" between two of the 4 "flutes", on the top-surface of the screw.) They don't quite fit Phillips, nor the superior-design of the old "Reed-&-Prince" screws, but they'll ruin a small standard Phillips screwdriver in a hurry. Just as a friendly FYI, "ISO" stands for "International Standards Organization", but just try to find a driver to buy... if you DO find a source, would you be so kind as to tell the rest of us, or at least me, where on earth to GET some? "Pretty Please"? I've been seriously trying to find one since the late 1970's, with no luck. The only one I've ever had, was hand-made for m...

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    Yes, but can you tell a Phillips from an "ISO" screwdriver, or screw? (Hint: the "ISO" screw has a little "dot" between two of the 4 "flutes", on the top-surface of the screw.) They don't quite fit Phillips, nor the superior-design of the old "Reed-&-Prince" screws, but they'll ruin a small standard Phillips screwdriver in a hurry. Just as a friendly FYI, "ISO" stands for "International Standards Organization", but just try to find a driver to buy... if you DO find a source, would you be so kind as to tell the rest of us, or at least me, where on earth to GET some? "Pretty Please"? I've been seriously trying to find one since the late 1970's, with no luck. The only one I've ever had, was hand-made for me by a retired Master Machinist, who used to live up the street from where I lived, when I was around 17 yrs young, & has long since disappeared. Many Thanks in advance!

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  • Phoenix NightOwl commented on Carleyy's instructable 10 Unusual Uses for Nail Polish3 years ago
    10 Unusual Uses for Nail Polish

    I've found that there are countless uses for nail polish. Example: Most of my cars, vans, etc. are old, and there isn't any touch-up paint that matches. Solution? Fingernailail Polish, since it comes in a myriad of colors, hues, metallic, metalflake ("glitter"), and so on. Clearcoat giving you a problem? Buff the edge of the affected area, then use clear nail polish to cover the area, "feathering" until any damage disappears. It's a good, inexpensive way to find a match for almost any color (or clear) at a fraction of the cost of having custom-mixed paint made, and it lasts a nice long time.Starting to show through again? Since nail polish usually doesn't go bad in a sealed bottle, just open it up and re-apply as-needed. It's also good if you have a painful but shall...

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    I've found that there are countless uses for nail polish. Example: Most of my cars, vans, etc. are old, and there isn't any touch-up paint that matches. Solution? Fingernailail Polish, since it comes in a myriad of colors, hues, metallic, metalflake ("glitter"), and so on. Clearcoat giving you a problem? Buff the edge of the affected area, then use clear nail polish to cover the area, "feathering" until any damage disappears. It's a good, inexpensive way to find a match for almost any color (or clear) at a fraction of the cost of having custom-mixed paint made, and it lasts a nice long time.Starting to show through again? Since nail polish usually doesn't go bad in a sealed bottle, just open it up and re-apply as-needed. It's also good if you have a painful but shallow cut, such as a paper-cut. Just clean the cut, put some clear nail polish on it, let it dry for a minute, and now you can finish what you started until you can properly fix that pesky minor injury to your skin. Clear nail polish is one of the things I try to keep in every toolbox, yet I never thought of using it this way. Kudos!

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