nope, wouldnt be enough travel to have any notable effect with the amoutn of ferrous mass on that, but would perforate cell walls
On Thu, Nov 7, 2019 at 1:05 PM Adam Moffett <[email protected]> wrote: > Wouldn't your weapon also pull the nails out of walls and thereby collapse > all the buildings? > > > On 11/7/2019 2:00 PM, Steve Jones wrote: > > this got me when i was kid and built a wire coil magnetizer. I burned up > my model train power supply. the little details like enamel coating are > what get you. I spent so many hours perfectly winding that coil too. I can > never have that time back. i think that may be the point in life that i > became jaded. had that not happened, i would probably have grown the > process to the degree that i was able to build my emp weapon that displaces > the iron atoms in the human body, shredding humans where they stand and not > damaging structures. The world would have bowed to my will..... those tiny > details ruin everything > > On Sun, Nov 3, 2019 at 1:24 PM Ken Hohhof <[email protected]> wrote: > >> If Radio Shack still existed, you could pick up a spool of “magnet wire”, >> thin stuff with enamel insulation. 26 or even 32 AWG should be fine for >> lighting an LED. Mount that cardboard tube on a lathe or drill and put a >> whole bunch of turns on it. >> >> >> >> Faraday’s law says voltage should be proportional to number of turns >> times rate of change of magnetic flux. Size of cardboard tube doesn’t >> explicitly show up in that equation, but I think Bill is right, because if >> you visualize the flux lines from the magnets, they would only factor into >> the equation if they loop around the coil of wire. If the coil is too wide >> or too long, some of the flux lines will stay inside the coil or will cut >> through it rather than looping around the ends. The too long problem is >> not as big of a problem because it just means the dropping magnets will >> include voltage for a longer time interval. >> >> >> >> >> >> *From:* AF <[email protected]> *On Behalf Of *Bill Prince >> *Sent:* Sunday, November 3, 2019 12:38 PM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] OT: Induction coil voltage >> >> >> >> The diameter of the tube and the size of the magnets will also affect how >> much voltage you get out of the thing. Try to minimize the air gap around >> the slug/magnets as much as possible. Use a smaller diameter tube or a >> larger diameter slug/magnets. >> >> >> >> bp >> >> <part15sbs{at}gmail{dot}com> >> >> >> >> On 11/3/2019 9:51 AM, Adam Moffett wrote: >> >> I'd bet I have 20-30 turns of 16ga wire....that's just what I happened to >> find first. I could tear apart some CAT5 and use the 24ga inside so I can >> get more turns in the same area. Or I can find something with a >> transformer inside and unwind the super skinny wire on it. I just don't >> know to what extent I need to go to make this thing work. >> >> And yeah it's not obvious in the picture I sent, but you're supposed to >> connect the two LED's together short leg to long leg so that one of them >> lights up when you drop the magnet North first and the other lights up when >> you drop it South first. >> >> I'd wondered about the length of the pulse too. It's a cheapo digital >> multimeter. It does not read the same on each drop of the magnet. When I >> say it read 30mV that's just the highest number I saw after several drops. >> >> -Adam >> >> >> >> On 11/3/2019 12:40 PM, Ken Hohhof wrote: >> >> >> I would think yes, although it seems the electrical pulse will be very >> brief and I’m not sure you’ll be able to measure it with a meter. Also >> have you determined the polarity of the DC generated or tried hooking up >> the LEDs both directions? >> >> In any case, I’d think wrapping the entire length of the cardboard tube >> with wire would make the LEDs light up for a longer time and be more >> visible. >> >> How many turns do you have on it now? >> >> *From:* AF <[email protected]> <[email protected]> *On >> Behalf Of *Adam Moffett >> *Sent:* Sunday, November 3, 2019 11:20 AM >> *To:* [email protected] >> *Subject:* [AFMUG] OT: Induction coil voltage >> >> I wanted to do this science experiment with the kids. My problem is my >> LED's don't light up. It's from a discontinued textbook. Apparently they >> sold a kit with the materials for all the projects, but that's no longer >> available so I'm scrounging in the garage. >> >> I put a volt meter on the rig and I was only getting 6mV when I dropped >> the magnet. I doubled the number of coils on the tube and then doubled the >> number of neodymium magnets and I'm getting closer to 30mV now, but I need >> closer to 2V to light up an LED, so I'm wondering what would increase the >> voltage by two orders of magnitude. Is it based on the number of turns in >> the coil? >> >> >> >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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