..if it can even do that?
I’m setting up a temporary fence for a couple of horses and I’m so confused, I find energizers with 12volts and ones with 20.000 volts. I’ve borrowed one with 9500 volts, and 1,5 joule, that I’m hoping won’t fry my thread (0,35 ohm, one copper thread and 4 stainless steel ones).
In: Engineering
My best guess:
From technical perspective, a transformer is likely used. Transformers convert A/C at one voltage to A/C at another voltage. If your fence is D/C (typical) you can add a diode (or full wave bridge) and a capacitor on the output side to convert the A/C to D/C.
The controller has a hot lead (connected to fence) and a ground. The circuit is basically open so it draws little to nothing UNTIL something touches the fence. Conceptually the electricity leaves the controller, travels through the wire, through the thing that touched the wire, into the ground, and “back to the controller”.
Electric fences TYPICALLY have a 1/5000 sec or so pulse width. So they can source a decent jolt (max current AVAILABLE could, theory, be almost 3k amps from a capacitor). The ACTUAL current drawn depends on the distance from the controller (resistance in wire) and the animal connection to ground (dry animal is low current (high resistance in dry skin), wet animal is bigger current draw, mostly travelling through the water on the skin not the skin itself) and finally the ground conditions (dry ground, is high resistance low current, wet ground is better connection so lower resistance and more current).
The wire will survive because the pulse is short (lots of time to cool down relatively speaking makes it hard to melt it).
Any of that help?
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