Will this work without a pulse circuit?

 

I do not want to help. You are going to hurt someone. There are regulations on how to make them safe.

 

What you have there is a great way to kill someone.
Obviously you do not have the experience to build one and as @ronsimpson says, there are regulations attached to there and you leave yourself open to severe legal repercussions if you proceed.
I have 50 years electronics experience and still would not make one an I advise yo the same.

 

Will this work without a pulse circuit?

No

 

There are several posts on this forum on the topic.

Number 1 suggestion: Don't kill anything with any of these.

For starters:

https://forum.allaboutcircuits.com/threads/how-to-make-an-electric-fence.178326/

https://forum.allaboutcircuits.com/threads/understanding-electric-fence-energizer.204667/

 

Will this work without a pulse circuit?

I don't remember the laws anymore. I think you should send out a pulse once every three seconds. People and animals need time to get off the fence. If the power is there all the time you cannot let go of the wire.

When I was small, I found a fence where some "farmer" plugged the wire directly into the 240V outlet. It was very hard to let go of the wire. There was no sign on the fence. No way to know. He did not care about me; he just wanted to know what killed his cow.

 

I have to admit that I'm still learning, and thank you for any advice you've given me. I'm just a 14-year-old inventor trying to protect my garden from porcupines, and I don't want to trap and kill them either, so I thought of a diy electric fence. Looking back even I see how dumb that sounds.

 

Will this work without a pulse circuit?

No.
A electric fence controller puts out short, low-current, high-voltage pulses that cannot electrocute you.
Amazon has electric fence chargers for <$30 that should work for you.
Edit: Likely the parts cost to build one from scratch would approach that amount.

 

One source I used from an automotive wrecker was a modern waste-spark automotive coil, puts out a HV, non-lethal pulse, once every second.

 

Be careful with similar devices.
I know of a case where a greenhouse owner connected a bare wire to the power grid phase to protect against thieves. In the morning, they found a woman electrocuted; there was a trial, and the greenhouse owner was sentenced to prison.

The transformers you showed can deliver a fairly large current, over 100mA, and such a current is life-threatening.

 

Based on your image you've created a 1 to 1 ratio transformer. Assuming 100% efficiency you have 220VAC in and 220VAC out. If the transformers are collectively 80% each you still have over 140VAC. This is exactly why people are telling you this is not just dangerous it's lethal.
I like blowing things up. Just not people. I concur - don't do that.

 

The transformers you showed can deliver a fairly large current, over 100mA, and such a current is life-threatening.

I agree.
Again, assuming 80% efficiency on both transformers, you're still looking at over 300mA. It can take as little as 6mA to end a person's life.
You have a very long way to go to get this down below that level. Or a very long time to spend in prison.
Someone mentioned "Pulsed". Since I don't know much on the subject, all I can imagine is a single pulse once every second. I've experienced electrified fences. Done right they are a great deterrent. Done wrong and - well - you guessed it.
STOP! Learn. Then build.
Better yet - buy new. And don't modify it.

 

FIRST, that circuit in post #1, as shown, is a lie!! The output of what is shown is about 220 volts, NOT VARIABLE!! It would possibly not bother a cow or a hose on dry ground, but that voltage has a serious track record of killing people.
Aside from that, it seems to me that it clearly violates at least one main rule of this website.

I have not seen any fence chargers on this site,, try the "Schematics For Free" site, which used to have all kinds of circuits.
ALSO, please investigate the literature on electrical shock hazards, for your own defense !!

 

Post #50.
https://forum.allaboutcircuits.com/threads/how-to-make-an-electric-fence.178326/page-3

 

Stray cats have been coming into my yard which upsets my cats. I took a battery powered bug zapper from Harbor Freight (takes two AA batteries) and removed the electronics within. Took a 5V phone charger wall wart and wired it in to the electronics. When you touched both electrodes you got a nasty snap. So I put down a metal screen. On top of that I put a ceramic tile. On top of that I put a metal cat dish. Connected one wire to the screen and the other clipped onto the bowl. With CCTV I reviewed one cat coming up to the bowl and sniffing the food in the dish. Then suddenly the cat took off like a scalded monkey. That cat has since been seen in the neighborhood but has never been seen in my yard again.

If you want an electric fence - that's a decent idea. I don't know if the over-voltage will harm the electronics, basically it's a transformer with some windings (obviously but I don't understand how the wiring works), a transistor and a 300 volt electrolytic capacitor with a discharge resistor across it. On the bug zapper one electrode was connected to a screen on one side of a separator and on the other side the same thing connected to the other screen. Cheap and easy to disassemble and to use to suit your purposes. And it's not lethal. It's unpleasant, to which I can attest to. But it won't kill anything. Except a fly or mosquito. Provided they were big enough to touch both electrodes at one time.