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Lie Detector

Wednesday, 24 December 2008 08:40

This circuit detects the resistance between your fingers to produce an oscillation. The detection-points will detect resistances as high as 300k and as the resistance decreases, the frequency increases.
Separate the two touch pads and attach them to the back of each hand. As the subject feels nervous, he will sweat and change the frequency of the circuit.
The photos show the circuit built on PC boards with separate touch pads.

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Design & Author Nazrul Islam +88 01711382041 Powerd by DiscoverBD (Non Profit & Non Govt. Organization & a sister concern of Digital Ware House) (For best view, setup your screen resulation 1024 X 768)

The Author is not responsible for any kind of electronic component & Device damages that may occurred during making or Testing Period. at the beginning, do not choose a mains powered project, only build a project connected to the mains when you are more experienced and are sure you can construct it safely.

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