How do you electrify a fence?

[DrPizza]

Originally posted by: sharkeeper
Sounds like you need a pole pig.

Be careful though, these are lethal especially around the pool!

If you're careless, this could be you getting the new look!

If you get off easy, you will sh!t your pants and will probably continue to do so for at least a week.

Cheers!

I always wanted to do that (pic 3).. However, I learned it's quite dangerous and more than 1 demonstrator has ended his life doing it... The high frequency voltage is pretty harmless... Unfortunately for the deceased, if the high frequence "spark" through the air hits the primary... it leaves an ionized path for the current to travel through, resulting in electrocution.. I wonder if they've figured out some good safety measures to avoid that??

 

[sharkeeper]

I always wanted to do that (pic 3).. However, I learned it's quite dangerous and more than 1 demonstrator has ended his life doing it... The high frequency voltage is pretty harmless... Unfortunately for the deceased, if the high frequence "spark" through the air hits the primary... it leaves an ionized path for the current to travel through, resulting in electrocution.. I wonder if they've figured out some good safety measures to avoid that??

Yes by doing the following:

Using a large, open workspace!
RF ground is your friend!
Use of a magnifier (second coil)
Extensive testing under various conditions and use of ultrasonic sensors to find corona ejection and to eliminate D'Arsonval discharges.
Balls!

Cheers!

 

[Thegonagle]

Originally posted by: KingNothing
Voltage doesn't kill, amperage kills. So what you need to do is figure out how much amperage the human body can withstand, then wire an [insert term] in between a power cord and your fence. Voltage and amperage are inversely related. Current traveling on electrical lines is high voltage, low amperage, then gets converted to low voltage, high amperage for your home appliances. You need whatever device that is.

Such a device is called a transformer.

And you're only about half right about the other stuff. Voltage and amperage (current) are inversely related given the same power (wattage), but to draw the same amperage (current) at, say, 120 volts compared to 12, the electrical resistance in a circuit must be 10 times greater, and vice versa. Likewise, a given resistance fed at 120 volts will draw 10 times more current than the same resistance fed at 12 volts.

A twelve volt car battery capable of supplying 1000 amps won't hurt you, because at 12 volts, the human body has too much resistance to allow sufficient current flow to be lethal. But 120 volts across the heart can be lethal, and a 15 amp household circuit will supply more than sufficient current to kill. (Most household electrical shocks do not flow across the heart, and don't last longer than a fraction of a second due to a person's reflex to pull away from the source of the shock; therefore, they are usually survivable.)

 

[TheLonelyPhoenix]

Originally posted by: MichaelD

Originally posted by: IamElectro
Go to your nearest farm supplier and buy a electric fence charger.

Nice user name!

I doubt that will work on a big, iron fence. Those chargers are meant to charge 100 feet of thin barbed wire, not much else.

Besides, I don't want an "Ouch, that hurt!" I want a "Zzzzzzzzzzzzzzzzzzzzap! *unconscious for 30 minutes* type shock. "

That kind of shock could kill someone with a weak heart or some pre-existing condition. Stun guns use capacitors to release a shock in the thousands of volts... more than you could continuously run through a fense with any degree of efficiency.

The voltage coming out of your wall socket is about 60 Hz AC. The muscles in your body need about 1/15th of a second to relax. In other words, any AC voltage above 15 Hz removes the guarantee that anyone who grabbed the electric wire will be able to let go. Go stick a fork in an electrical socket now if you dont believe me

In other words, forget what you saw in Jurassic Park - this project isn't happening.

 

[hellfreeze]

Originally posted by: sharkeeper
EDIT: Btw stun guns are a joke. They do nothing more than piss a pissed man off. Unless you make one designed to do more damage. :evil:

that just cracked me up for some reason

MichaelD: post pics of your home so we know exactly what you're trying to do

 

[z0mb13]

is that even legal??

 

[wfbberzerker]

what the hell is "semi-lethal?" do you only want to kill people some of the time?

 

[Eli]

Originally posted by: wfbberzerker
what the hell is "semi-lethal?" do you only want to kill people some of the time?

LMAO.. I thought the same thing.

Correct me if I'm wrong, but does the mass of the secondary terminal even matter when it comes to HV devices?

Basically, would there be a difference in output if you took your 50,000V tesla coil and used a small brass knob versus a 50lb block of steel?

It would still arc to.. whatever came near, right?

 

[ThePresence]

MichaelD scares me.

 

[MedicBob]

Originally posted by: MichaelD
I was thinking of how the ranchers do it. Wooden stakes or metal stakes with insulators on the stakes around which the wire is wrapped.

Those fences are easily defeated by even semi-intelligent primates.

I'm talking about a 10-foot, cast iron fence. How would you electrify it with enough voltage to knock a man on his ass? Like a stun gun.

Hmm?

FYI, trap=murder if they die.

But, check your state laws.

 

[0roo0roo]

doesn't take much to stop the heart. u lookin for a murder charge?:

 

[Kibbo]

I would suggest you seek legal advice before you set anything up. You don't want your ass sued or in jail.

 

[Adul]

should be in high;y technical if you want descent answers

 

[Bassyhead]

just hook up a microwave transformer to the fence

 

[Bulk Beef]

Originally posted by: ThePresence
MichaelD scares me.

Think of how his neighbors must feel.

 

[mugs]

You're going to get sued.

 

[Fritzo]

I think this thread desearves a:


()

 

[sharkeeper]

just hook up a microwave transformer to the fence

Yes 2,000V at 500mA is definitely lethal.

If you can isolate the fence with low leakage, it will work.

Of course all of my suggestions should be taken in jest. Setting up such an arrangement would often result in insurmountable problems in court and ultimately, a corrections facility!

Cheers!

 

[iamme]

whatever you do, PROMISE to video take everything

 

[Insane3D]

Are you running with that make your own compound idea?

Are you going to declare your property a seperate country or something and grow a long scraggly beard?

 

[sciencewhiz]

Besides the voltage, current, and frequency as other people have mentioned, you also have to worry about the path the current flows through the body. From one leg to another doesn't do much, but arm to arm goes right through the heart.

 

[Rookie]

Originally posted by: MacBaine

Originally posted by: HoodRich
why don u jus carry an gun fuly auto

Why don't you steal an english book one of these days. Or kill yourself.

I love equally well thought out posts. :laugh:

 

[Aharami]

this guy is nucking futs

 

[sharkeeper]

this guy is nucking futs

"I've been mad for fvcking years, absolutely years, been over the edge for yonks, been working me buns off for bands..."

"I've always been mad, I know I've been mad, like the
most of us...very hard to explain why you're mad, even if you're not mad..."

Sounds about right...



Cheers!

 

[everman]

I think it would be more efficiant to "know" which area to electrify just before it needs to be, instead of keeping the entire thing hot. IE: Some kind of sensor (laser that detects distance of object), that will calculate what area will make contact. Then only that part will get charged. This would require much less energy than the whole fence being constantly hot. I think I'm thinking about this far too much. um...have fun.