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Old March 17, 2010, 07:35   #1
aepgilli
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build your own electric fence charger?

Getting sick of buying fence chargers to keep the dogs in and the raccons and gators out and them dying every six months. Last one lasted 2 weeks. Anybody knowwhere to get parts / instructions to put your own together?
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Old March 17, 2010, 07:46   #2
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AC or DC ? what keeps taking them out ? do you need to have intermittent charge or would constant on be acceptable and safe ?
food for thought:
http://www.motherearthnews.com/Do-It...e-Charger.aspx

http://www.pasturemanagement.com/mistakes.htm
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Old March 17, 2010, 08:31   #3
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On the farm, back in the early 50's when electricity first came through our area, my grandfather used 110v AC household current, and a light bulb for a resistor. Once in a while something would get killed. If the critter happened to survive the initial encounter they avoided the fence like the plague.

Don't do this.
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Old March 17, 2010, 10:11   #4
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whats wrong with them, i used to work at one of the few shops in the country that repaired them, i can fix just about any model except the gallaghers, there design makes repair difficult, 3 most common problems are ants or small bugs short across the legs of the scr. fence gets hit by lightening and shorts the varistors. diac or small capacitor goes bad and dont pulse them system, the scr is far and away the biggest problem, the buzzing of the system attracts ants. what model you got? i might be inclined to pick my tools up again and give it a go. rarely the fuses were blown, all the new models have fuses protecting the incoming power not just the out side lightening protection.


the old zap 20 or 50 desgin( same design just the 50 had 2 much larger caps in the cover vs the 2 smaller ones mounted beside the board on the 20) was really great, the covers were almost ant proof, just loosen the two screw and run a bead of rtv and close her up and seal super tight, the most best is probably what the ranchers called the thumper, it had a coiled spring inside with 2 contact points, worked kinda like a watch, really only three parts inside, coil and cap, resistor bank, and the spring and wheel timer assy, bad thing is almost no fixing these babies, usually they were 20 years old and worn out not blown up.
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Old March 18, 2010, 00:12   #5
Bama Steve
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Why could you not just rig your own?

- 12 VDC automobile ignition coil (w/ resistor on primary leg)
- 12 VDC flasher relay for automotive turn signals (keep some spares)
- Condenser for ignition points (capacitor) across flasher relay
- 12 VDC battery charger

Ground the Negative side to earth and send the HV out to the wire.

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Old March 18, 2010, 10:23   #6
aepgilli
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Quote:
Originally posted by chromestarhustler
whats wrong with them,
I ain't smart enough to know!

they just don't "zap" anymore.
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Old March 18, 2010, 10:25   #7
aepgilli
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Quote:
Originally posted by Bama Steve
Why could you not just rig your own?

- 12 VDC automobile ignition coil (w/ resistor on primary leg)
- 12 VDC flasher relay for automotive turn signals (keep some spares)
- Condenser for ignition points (capacitor) across flasher relay
- 12 VDC battery charger

Ground the Negative side to earth and send the HV out to the wire.

Found a guy who sells a kit for 15$ including postage
http://www3.telus.net/chemelec/Proje...cer/Fencer.htm

If I can't make that one work, I'm gonna go with the relay and coil
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Old March 18, 2010, 17:49   #8
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Did you see the thing he caught in his electric fence?

http://www3.telus.net/chemelec/Proje...cer/Caught.jpg

OMG!!
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Old March 22, 2010, 19:02   #9
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Old March 22, 2010, 21:58   #10
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Probably been posted before, but still funny:

If you have ever used an electric fence you should read this. Or
even if you haven't. The language used is a bit smutty and/or
coarse, but 'he tells it like it is' without cursing.

If you don't laugh hysterically at this... CHECK YOUR PULSE... this
is funny.... and true. This was sent by a retired dentist.

"We have the standard 6 ft. fence in the backyard, and a few months
ago, I heard about burglaries increasing dramatically in the entire
city. To make sure this never happened to me, I got an electric
fence and ran a single wire along the top of the fence.

Actually, I got the biggest cattle charger Tractor Supply had, made
for 26 miles of fence. I then used an 8 ft. long ground rod, and
drove it 7.5 feet into the ground. The ground rod is the key, with
the more you have in the ground, the better the fence works.

One day I'm mowing the back yard with my cheapo Wal-Mart 6 hp big
wheel push mower. The hot wire is broken and laying out in the yard.
I knew for a fact that I unplugged the charger. I pushed the mower
around the wire and reached down to grab it, to throw it out of the
way.

It seems as though I hadn't remembered to unplug it after all.

Now I'm standing there, I've got the running lawnmower in my right
hand and the 1.7 giga-volt fence wire in the other hand. Keep in
mind the charger is about the size of a marine battery and has a
picture of an upside down cow on fire on the cover.

Time stood still.

The first thing I notice is my pecker trying to climb up the front
side of my body. My ears curled downwards and I could feel the
lawnmower ignition firing in the backside of my brain. Every time
that Briggs & Stratton rolled over, I could feel the spark in my
head. I was literally at one with the engine.

It seems as though the fence charger and the piece of shit
lawnmower were fighting over who would control my electrical
impulses.

Science says you cannot crap, pee, and vomit at the same time. I
beg to differ. Not only did I do all three at once, but my bowels
emptied 3 different times in less than half of a second. It was a
Matrix kind of bowel movement, where time is creeping along and
you're all leaned back and BAM BAM BAM you just crap your pants 3
times. It seemed like there were minutes in between but in reality
it was so close together it was like exhaust pulses from a big block
Chevy turning 8 grand.

At this point I'm about 30 minutes (maybe 2 seconds) into holding
onto the fence wire. My hand is wrapped around the wire palm down so
I can't let go. I grew up on a farm so I know all about electric
fences ... but Dad always had those piece of shit chargers made by
International or whoever that were like 9 volts and just kinda
tickled.

This one I could not let go of. The 8 foot long ground rod is now
accepting signals from me through the permadamp Ark-La-Tex river
bottom soil. At this point I'm thinking I'm going to have to just
man up and take it, until the lawnmower runs out of gas.

'Damn!,' I think, as I remember I just filled the tank!

Now the lawnmower is starting to run rough. It has settled into a
loping run pattern as if it had some kind of big lawnmower race cam
in it. Covered in poop, pee, and with my vomit on my chest I think
'Oh God please die ... Pleeeeaze die'. But nooooo, it settles into
the rough lumpy cam idle nicely and remains there, like a big bore
roller cam EFI motor waiting for the go command from its owner's
right foot.

So here I am in the middle of July, 104 degrees, 80% humidity,
standing in my own backyard, begging God to kill me. God did not
take me that day ... he left me there covered in my own fluids to
writhe in the misery my own stupidity had created.

I honestly don't know how I got loose from the wire ...
I woke up laying on the ground hours later. The lawnmower was
beside me, out of gas. It was later on in the day and I was
sunburned.

There were two large dead grass spots where I had been standing,
and then another long skinny dead spot where the wire had laid while
I was on the ground still holding on to it. I assume I finally had a
seizure and in the resulting thrashing had somehow let go of the
wire.

Upon waking from my electrically induced sleep I realized a few
things:

1- Three of my teeth seem to have melted.

2- I now have cramps in the bottoms of my feet and my right butt
cheek (not the left, just the right).

3- Poop, pee, and vomit when all mixed together, do not smell as
bad as you might think.

4- My left eye will not open.

5- My right eye will not close.

6- The lawnmower runs like a sumbitch now. Seriously! I think our
little session cleared out some carbon fouling or something, because
it was better than new after that.

7- My nuts are still smaller than average yet they are almost a
foot long.

8- I can turn on the TV in the game room by farting while thinking
of the number 4 (still don't understand this???).

That day changed my life. I now have a newfound respect for things.
I appreciate the little things more, and now I always triple check
to make sure the fence is unplugged before I mow.

The good news, is that if a burglar does try to come over the
fence, I can clearly visualize what my security system will do to
him, and THAT gives me a warm and fuzzy feeling all over, which also
reminds me to triple check before I mow.
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Old March 23, 2010, 13:43   #11
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Love his "funky" dance!
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Old March 23, 2010, 15:28   #12
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these 2 posts are from the Assaultweb's story board about Sling and his possum Zapper. Histerical.

http://www.assaultweb.net/forums/sho...=possum+zapper

http://www.assaultweb.net/forums/showthread.php?t=47452
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Old March 24, 2010, 15:26   #13
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My fence smokes a bird about once a week.



I don't know what species it is, but it wasn't intentional. Generally there is a little beak-mark on the wire.


Here's the one I use, its affordable at $35:

http://www.fishock.com/store/electri...arger/SS-525CS


It's continuous voltage, but not very high potential. I've touched it with a green blade of grass and not felt a tingle. It will arc if I ground it to metal.

I only needed to use it for a couple weeks before my dogs decided never to question it. My dogs cried bloody murder when it bit 'em. Girlfriend went all crazy too, watching the dogs react.

I haven't plugged mine in recently.

BTW, I tried to go cheap and use PVC couplings as insulators ($1.40 for a 10-pack). Under ideal conditions they worked, but rain and other conditions caused a few failures.
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Old March 24, 2010, 15:54   #14
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They must not make them like they used too. When my dad first bought a fence charger, he bought it from Sears and Roebuck farm catalog. 50k volts, pulsed once per second. It would knock your equipment into the dirt let me tell you!! From harsh, bitter experience...many times. It lasted the ten years we had the farm, then we sold it. We used that thing to charge miles of fence, seriously, several miles of fence.

If you keep bruning them out, let the Chromestarhustler build you one. Cost you less in the long run. If I went that route, I'd have a rotary switch so I could choose the voltage for the day. Mild to wild.
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Old March 25, 2010, 18:11   #15
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Wish I had made a picture of the bug zapper I built at the last house. Neon sign (large, commercial) block power supply, two cylindrical cages of hardware cloth 4 feet long, 4 foot blacklight tube in the middle. Took a while to get the spacing right. Small bugs made a "snap" like a rubber band breaking. Big ones sounded like a shotgun primer. Yeah boy! The ground under it had a drift 2" high of bug molecules.
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Old April 01, 2010, 07:11   #16
aepgilli
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Quote:
Originally posted by DaisyCutter
My fence smokes a bird about once a week.



I don't know what species it is, but it wasn't intentional. Generally there is a little beak-mark on the wire.


Here's the one I use, its affordable at $35:

http://www.fishock.com/store/electri...arger/SS-525CS


It's continuous voltage, but not very high potential. I've touched it with a green blade of grass and not felt a tingle. It will arc if I ground it to metal.

I only needed to use it for a couple weeks before my dogs decided never to question it. My dogs cried bloody murder when it bit 'em. Girlfriend went all crazy too, watching the dogs react.

I haven't plugged mine in recently.

BTW, I tried to go cheap and use PVC couplings as insulators ($1.40 for a 10-pack). Under ideal conditions they worked, but rain and other conditions caused a few failures.
That is the exact one, I've got a half dozen of 'em that died, the longest one lasted almost a year, the shortest was about 2 weeks.
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