Where can I find circuit for electronic rat trap?

[Greorge]

Chris,
Could you make picture of that wire cage with few other details in it?

One thing for sure mice and rats are very smart and spring traps after one or two catches, get raided without being triggered.

[Greorge]

No pictures?

[Greorge]

Out of interest made search today for "Electronic … trap"  and got this page.

[digsys]

I describe how I did it many years ago in this recent thread -
https://www.eevblog.com/forum/projects/how-to-electronicly-detect-a-pest-trap-has-been-triggered/msg2501346/#msg2501346
Very simple and designed for HEAPS of rats

[Greorge]

How nice to see your post.

Could you make some kind of sketch with components and how it is wired?

[floobydust]

Ordinary HV DC from a multiplier does not do it, the start up time (squeal) spooks the rodent to run away. HV AC doesn't mess up EMG and is not as effective.
You need at least 7kV in pulsing DC. The approach is pulsing a flyback transformer at 235Hz, for around 20 seconds. It would basic to build using a small MCU like ATTiny85, and control a motor for the dump. Below is flowchart for mouse trap.
There are many (censored) youtube videos on different traps. They do conceal PSU details.

[digsys]

Describing methods is not a problem, all available on www, but posting actual diagrams, especially for a novice, is irresponsible and can be a legal minefield.
You should look for a friend or club that can teach you, and point out the dangers.

[ledtester]

Perhaps all you need is a 12V car battery:



Then again, maybe just a bucket of water will work... if you can just get one mouse to drop into it!
(e.g. at the 6:30 mark).

[Greorge]

Sorry for trouble to all concerned.

But if there is diagram and parts list somewhere on the net I am still interested.

[Greorge]

As to those videos on the net, comments were that they are pet rats and mice.

[digsys]

Sorry for trouble to all concerned ....

No need to be sorry mate. The fact that you posted this, shows that you appreciate the safety concerns. It's what forums are best at.
You can appreciate that the amount of energy required to kill, or seriously stun a rat (and these can get quite huge), is well enough to fry or even kill a human !!!
It is likely you will find drawings or similar on www somewhere, BUT I'd always check with someone more knowledgeable before attempting them.
After all, you don't want the rats standing over your limp body, laughing ... That would suck ! :-)

[floobydust]

It might be better to simply purchase a commercial unit unless you have high-voltage electronics experience and can ensure the neighbor's cat or dog or a kid is safe around the trap you build.

Every youtuber hides their actual power supply to prevent copycats.
The 12V (powered) ones are fake, you can see a boost-converter stashed away around the corner in the videos. Another give away is the 400V can electrolytic capacitors, some seem to have a PSU stuffed inside.

You have to ask how a rat can start smoking on only 12V?

sch is a simple mains-powered unit but no idea of the output voltage. It has auto on/off.