Electric Fence Charger Homemade

[@thomascramer417]

Love your inventions! Keep posting!

[@Handyman2020]

Being a retired electronic technician, I had most of the components on hand and unless you are versed on electronic assembly and soldering I would not advise on building this charger. Although it is one of the simplest chargers to build. Battery cost $35, coil $ 20, ammo box $10, solar panel $8 plus all the electronic components.

[@ihophomestead]

Thanks!

[@antoniovecchiarelli2235]

Good day everyone, I live in Tuscany, Italy. I am an electronic enthusiast and I built several Electric Fence Circuit Charger. I noticed that the electrolytic capacitor on Pin 1 from NE555 ist mounted with wrong polarization, it is normal, or it is a drawing error, thanks for your video, Antonio

[@Handyman2020]

I noticed that the capacitor is drawn in wrong after I posted the video, thanks for pointing it out.

[@antoniovecchiarelli2235]

@@Handyman2020 Thanks for your quick response

[@charlieabel1533]

A 1.5 watt solar panel sounds incredibly small for this - is it keeping the battery charged?

[@Handyman2020]

The panel provides 100 MA of current and I have had no problem with the battery staying charged.

[@Biokemist-o3k]

This build netted you a new subscriber my friend...lol I have a question though, Is there a way to use a relay to have it make that kachunk...kachunk,,,,,kachunk that the old fence chargers used to make?

[@Handyman2020]

The old fence chargers used a High Voltage transformer and a relay or other pulsing device to energize the transformer momentarily . A bad design in my opinion. The newer chargers are easier to build and more efficient.

[@Biokemist-o3k]

@@Handyman2020 Agreed. Here is what I am actually trying to do. I want to fill a capacitor at 2000 volts and then chop it with a thyristor to get varying frequencies. Probably 120 hertz or even 60 hertz to be able to use a microwave oven transformer to take back down to 120 volts with some amps with the resonant capacitor.

[@Handyman2020]

Not exactly sure what you are trying to do, but I do not know of a thyristor that can handle the 2K voltage directly.@@Biokemist-o3k

[@Biokemist-o3k]

@@Handyman2020 When you raise voltage and frequency you can fill a capacitor very quickly. Then you can chop it to 60hz and run it through a microwave oven transformer with a resonant capacitor. This is essentially an inverter system that will enable you to take a 12 volt battery and if you use resonance to make the draw negligible to produce the electrical disturbance then you have done something similar to collecting solar energy and converting it. Check Tesla Conference 1996 Don Smith device.

[@Handyman2020]

@@Biokemist-o3k Yes I am familiar with the Don Smith device.

[@anujananu8175]

I think good But 470 ohms and. 1k resistance are change that places

[@omran991]

is it IRFD 250 OR IRFP250 ?

[@Handyman2020]

IRFP

[@NCF8710]

What is the estimated output in joules? Thanks!

[@Handyman2020]

I'm not really sure how much energy in joules the charger puts out or how to calculate it. Judging by the length of the spark and the noise of the discharge I would say it is quite large.

[@NCF8710]

Thanks for your reply. I looked into using an automotive ignition coil for this type of application. The output voltage is generated when the coil primary is interrupted. This causes an abrupt collapse of the magnetic field within the coil which in turn induces a high voltage in the secondary. This voltage can be about 20 kV. By the looks of your spark, you are getting all of that. Commercial fence chargers use a capacitor to store a charge which is then connected across the primary of a transformer via an SCR. The stored joules can be calculated from the capacitance and the charge voltage. The output joules is somewhat less due to losses within the output transformer and the SCR. In your case, the ignition coil is the energy storage device. The output power is determined by the ignition coil used. I expect the shock delivered by your system would be quite severe. Thanks again! @@Handyman2020

[@l0gic23]

Can we see it in use?

[@Handyman2020]

I have had it in use keeping the racoons out of my grapes and it worked fine. I also have it in use at my son in laws house keeping the coyotes and racoons out of our watermelon patch.

[@raakmore4443]

👍

[@naradajayasingha8967]

Hay there how much long this can carry current

[@Handyman2020]

Not sure but it is a hot charger.

[@sandrarichardson2713]

What did it actually end up costing---close estimate? And how long of a run would this power? I want to protect muscadines as well as rabbits and deer out of my peas. I love this kind of thing. Thanks for sharing your ingenuity. Jesus bless.

[@Handyman2020]

This charger is very powerful, the arc off the coil is 1/2 inch long and worked well for keeping the racoons out of my grapes. Unless you are versed in electronics assembly I would not recommend attempting to build. Sorry for the delayed reply, I thought I had already replied.

[@sandrarichardson2713]

@@Handyman2020 No problem with delay....many times folks don't reply at all. Or sometimes months later. That's fine...I know life is a very busy thing. Hope to do this but this project will have to get in line with all the other ones lol Jesus bless.

[@PF-gi9vv]

He has a solar panel charging the battery so it will last for many years until the battery expires, 5 - 10 years.

[@sandrarichardson2713]

@@PF-gi9vv Thanks for helping me....every little bit helps. Jesus bless.

[@TheTubejunky]

@@PF-gi9vv 2 years tops the battery will drain fast also with that coil. Not capacitors to help with storage and surge current. good idea bad circuit.

[@oscargutierrez3042]

Hi sir i have a question , there is any circuit board available on ebay or something like yours?

[@Handyman2020]

No there is no circuit board available and unless you are an electronics hobbyist You probably could not assemble the project. Although the make up of the circuit is relatively simple compared to other designs.

[@randymacsgarage]

@@Handyman2020 would a turn signal flasher work?

[@Handyman2020]

@@randymacsgarage I don't think that would work since the output from the hexfet is a short and intense pulse.