This elaborate electric fence design differs from the others by triggering an alarm in the event of cutting the fence wires. Commercial devices are expensive, and this project has all the functions of them at a lower cost. This circuit is basically formed by two astable 555. The first is U1 and the components around it oscillate at high frequency to produce the pulses of the primary of a car ignition coil, thus generating high voltage. The high voltage is applied to the fence and returning to the circuit informs that there was no breakage of the fence.
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