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Detects even the smallest changes

The circuit described in this article is incredibly sensitive to changes in the magnetic field. It can be used to detect earthquakes, but it can also function as a car alarm or for theft prevention. The construction is straightforward and only standard components have been used in the design.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

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