10-01-2004, 07:08 PM | #1 (permalink) |
Insane
Location: Toronto
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My own personal force field.
I need some help on a little electronics project I want to undertake myself. I plan on using an inductor coil to creat a magnetic field big enough to disrupt those security towers at the exits of stores. Now I just need to know how big the coil has to be and if it will turn the towers off or set the off from 50 feet away. Either way would work I just need to know what to expect.
So what I would need to know is: 1) How big of an inductor coil? If I had one of those motomaster Eliminator things so I could supply AC power how big would it need to be. 2) Do I just connect the coil to a plug and pop it into the eliminator? Or would potentiometers be involved in the fine tuning. 3) Would it actually work? This is of course all theoretical and I would never think of stealing. Any help is appreciated! |
10-01-2004, 08:08 PM | #2 (permalink) | |
... a sort of licensed troubleshooter.
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Quote:
For now, I'll go look for my college physics book, as I need to brush up. I'll try to PM you in a few days. |
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10-03-2004, 07:07 PM | #6 (permalink) |
Insane
Location: Toronto
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I will let you know how it goes after I have my loot or I get out of jail, whichever comes first. Also, Flyguy, your avatar mesmerizes me.
As far as I know the towers send out their own magnetic field and if I guess correctly the sensors in the product would disrupt the field in a certain way. When the towers pick up this disturbance they would recognize it as the sensor. Sort of how a metal detector works except with a predictable reaction. If I have my own magnetic field I should be able to fool the tower. I think. |
10-03-2004, 07:13 PM | #7 (permalink) |
Upright
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I don't know about you all, but a small tactical nuclear device seems to emit a fairly good EM pulse.
At least that's what movies say. How can movies be wrong. Actually, you will need a really good wholop to destroy the detectors. You have to overload the inputs to the actual alarm, it would be easier to just short the circuit. Oh, I see you are from Toronto. Go back to the tactical device. Carefully placed, you will solve both your problem and the rest of the countries at the same time. Cheers |
10-03-2004, 09:00 PM | #8 (permalink) |
Upright
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More than likely you will set it off, one little change in the magnetic field will set it off, but to keep it the same you would have to know the exact voltage or field strength or whatever it is (I've only taken highschool physics) that the towers operate on.
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10-04-2004, 12:59 PM | #10 (permalink) |
Insane
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Just a thought but instead of disrupting the towers why don't you disrupt the sensors. In high school I worked at a drug store and if you rapped the product in aluminum foil the detectors would not go off. So I suspect the aluminum foil is acting as a faraday cage. and the possibilties are endless.
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10-04-2004, 02:10 PM | #11 (permalink) |
Tilted
Location: NC
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I did a project to identify cows, but I believe store antitheft is about the same: the towers are transmitters/receivers.
They transmit a radio wave to an antenna (the anti-theft device) on the store item. This provides enough energy for the device to send back its i.d. number. If the i.d. number was just purchased, it's okay. If not, an alarm sounds. Sometimes an electronic key card will set them off. If this happens, you can get a shield for them. If this shield blocks the key card, the same material would block a store's i.d. system. |
10-05-2004, 07:32 PM | #13 (permalink) |
Upright
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i believe the word you are looking for is frequency. I would say that an easier way.. used to be to just squish the gags together, unless there is a hidden on, this is the way that I showed tower how to do while i worked there. they never listened. but, all the same, don't try this at home... oh, and if you need to get into the bathrooms there, the code is 96939.
kthanks. that works at all tower stores by the way. |
Tags |
field, force, personal |
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