Why Do Electric Fences Pulse

Electric fences are a popular choice for containing livestock and keeping unwanted visitors out. These fences employ a unique feature that sets them apart from traditional wire fences – a pulsating current. The main reason for the pulsating nature of the electric fence is to minimize the risk of a dangerous electric shock to both animals and humans. The device responsible for delivering the charge, known as a pasture fence energizer, works by creating high voltage pulses that are sent to the fence. However, it’s crucial that this energy is "portioned" to ensure that it doesn’t result in a dangerous current flow. This clever design allows for a safe and effective means of containing livestock and protecting property without posing an unreasonable danger.

Do All Electric Fences Pulse?

Such as an animal) comes in contact with it. This design ensures that the animal gets a single, powerful shock when it touches the fence.

There are several reasons why electric fences pulse. Firstly, pulsing helps to conserve energy. Continuous flow of electricity would result in a constant drain of power and may not effectively deter animals. By pulsing the energy, electric fences become more efficient and can effectively deter animals while prolonging the battery life of the charger.

Furthermore, pulsing helps to minimize interference with other electrical systems in the vicinity. Continuous electricity flow could create unwanted electromagnetic interference, causing disruptions to nearby equipment or systems.

Different Types of Electric Fences and How They Work

Electric fences are widely used for various purposes, including containing livestock, deterring intruders, and protecting crops. There are two primary types of electric fences: continuous and pulsed.

Continuous electric fences send a constant electrical charge through the wire or tape. This charge acts as a deterrent by delivering a steady, albeit harmless, electric shock to anyone or anything that comes into contact with the fence. While effective, continuous electric fences consume more energy and can pose a higher risk of injury.

Pulsed electric fences, on the other hand, deliver electric shocks in intermittent pulses. These fences consist of a charger, which sends periodic electric pulses down the fence line. The pulses create a psychological deterrent, causing a brief but memorable shock that discourages animals or intruders from attempting to breach the fence. Pulsed electric fences are more energy-efficient and can be safer for both humans and animals, as they minimize the risk of prolonged exposure to electric shocks.

Overall, pulsed electric fences offer an effective and efficient means of containment or protection while minimizing the potential risks associated with continuous electric currents.

The ticking sound emitted by electric fences is primarily due to the sparks or arcing of the electrical current across the fence hardware, resulting in radio noise. This interference, commonly recognized as a distinctive tick-tick-tick sound, possesses the potential to disrupt communication within a mile radius.

What Is the Ticking Sound From Electric Fence?

What’s the ticking sound from an electric fence? This type of interference can cause disruptions in communication up to a distance of a mile. The tick-tick-tick sound is a result of the spark generating radio noise, which can interfere with various electronic devices.

The spark or arcing occurs when the electric fence system isn’t properly installed or maintained. It can happen due to loose connections, damaged wires, or faulty hardware. When the electrical current jumps across these faulty areas, it creates the ticking sound that’s often associated with electric fences.

The radio noise generated by an electric fence can cause disruptions in various communication systems, including radio and television transmissions, wireless networks, and even cell phone signals.

To prevent or minimize the ticking sound and radio interference from electric fences, it’s essential to ensure that the fence system is installed properly and regularly maintained. This includes regularly checking for loose connections, damaged wires, and faulty hardware. It’s also helpful to invest in high-quality fence components that are designed to minimize sparking and arcing.

This generates radio noise that can disrupt communication systems up to a distance of a mile. By addressing loose connections, damaged wires, and faulty hardware, the tick-tick-tick sound can be reduced, and the potential for interference with electronic devices can be mitigated.


In conclusion, the pulsing nature of electric fences is crucial in minimizing the risk of dangerous electric shocks while effectively containing animals within a pasture. The strategic "portioning" of energy prevents the simultaneous occurrence of high voltage and dangerous current, further enhancing the safety and efficiency of electric fences.

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