Weekend Projects - Non-Contact Voltage Detector

From the creator

Complete instructions for this episode of Weekend Projects can be found at http://makezine.com/projects/non-contact-voltage-detector/ Detect the tiniest movements of electrical charge nearby without touching the source. This handy handheld tool will light up a LED when a nearby wire is live with electricity. It achieves this by multiplying the gain of three transistors, creating an astounding 8,000,000 increase in charge!

Published 2014-07-03 · Watch on YouTube ↗
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