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Lie Detector Circuits Last Updated on:
Monday, October 03, 2011 06:07 PM
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
Lie Detector - 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)
Simple Lie Detector - 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..... [Aaron Cake]
Any other suggestions for
Lie Detector Circuits? eMail
Dave
