Arduino Controlled Electric Fence Charger...

Projects General Guidance
1

Hi All,

http://hmin.tripod.com/als/andysm/docs/electricfence.pdf presents a dual 555 timer design using a 2n2222 to a 2n3055 and feeding an automotive coil to create electric fence pulses..

An arduino can create these pulses easily as well as a circuit to measure the resistance when NOT creating HV pulses to determine if livestock are still trying to push against the fence , time for another very brief(low duty cycle) pulse.

And other duty cycles can be programmed as well

Dont forget a heat sink on the 2n3055

gwen
ps this should get folks polarized somewhat(intended as a dual pun)!

2

An arduino can create these pulses easily as well as a circuit to measure the resistance when NOT creating HV pulses

Better add lots of ESD protection

3

Or you could set this up as a family therapy facilitator ala the Simpsons:

http://www.hulu.com/watch/29856/the-simpsons-electric-shock-aversion-therapy

4

Groove:

An arduino can create these pulses easily as well as a circuit to measure the resistance when NOT creating HV pulses

Better add lots of ESD protection

Yes I would recommend using a opto-isolator between the arduino digital output pin and the coil driver transistors. That way there would be no need for a common ground between the arduino and the HV coil generator circuit. That along with a seperate DC power sources for the coil (12vdc) and the arduino would go a long why in eliminating any ESD or noise problems.

Lefty

5

If you actually install it on a fence you'll need lightning protection too.

6

you'll need lightning protection too.

I thought lightning was the ultimate ESD!

7

So... Is there anyone who made that circuit work? Im interested to built one

8

I think this guy did some preliminary testing.
not sure if he got it working or gave up.