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Lie Detector Circuits
Last Updated on:
Friday, March 12, 2010 12:07 PM |
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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Lie Detector - (electronic circuit added 7/03) |
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Lie Detector (Aaron Cake) - (electronic circuit added 4/05) |
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Lie Detector (hackcanada) - The circuit diagram of the Lie Detector is shown
above. It consists of three transistors (TR1 to TR3), a capacitor (C1), two lights or
LEDs (L1 & L2), five resistors (R1 to R5), and a variable resistor (VR1). This circuit
is based on the fact that a person's skin resistance changes when they sweat (sweating
because they're lying)....(electronic circuit added 7/03) |
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Simple Lie Detector (Aaron Cake) - Here's a simple lie detector that can be built
in a few minutes, but can be incredibly useful when you want to know if someone is
really telling you the truth. It is not as sophisticated as the ones the professionals
use, but it works. It works by measuring skin resistance, which goes down when you
lie. (electronic circuit added 4/05) |
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