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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Wednesday, June 02, 2021 01:45 PM
Hobby Circuits List
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LINK to Dave's circuit, but DO NOT COPY any files to your WEB
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Fence Alarm
designed
by David Johnson, P.E. |
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Problem: It was deer hunting season and cattle rancher
was fed up with hunters cutting his barbed wire fence, to gain entrance onto his property.
The rancher want to be alerted when the barbed wire was cut.
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| Solution: The circuits below is placed inside a small
plastic box which is placed inside the house. A
power jack for the +12v input and a terminal block for the earth ground and sensor
wire connections are installed. Two additional terminals were connected to a siren.
Central to the design is a closed pushbutton switch. When
pressed, the button would test the circuit by simulating a broken fence wire. |
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DC Magazine, Issue 2, Page 7 : Fence Alarm |
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