MADLAB ELECTRONIC KIT - LIE DETECTOR

The Lie Detector works by measuring galvanic response. In other words, when a person lies, they tend to sweat. Perspiration has a high sodium content, so sweat is conductive. Dry skin has a resistance of about 1 million ohms, whereas the resistance of moist skin is reduced by a factor of ten or more.



A person holding the probe wires will change the voltage at the upper probe wire depending on their skin resistance. The skin resistance is in parallel with R2 and, because it is likely to be similar to or smaller than R2, the voltage at the probe wire will fall as skin resistance falls.

Product basic info

Instruction manual languages: Dutch, English, French, German, Spanish

Primary colours: Green

Additional colours: Black

Depth unit: 15.5 cm

Height unit: 3.5 cm

Width unit: 15.5 cm

Weight unit: 34 g

Physical properties

Number of LEDs: 2

Operational properties

Coding skill level: none

Electronics skill level: none

Mechanics skill level: none

Soldering skill level: none

Power supply

Batteries included: No

Number of batteries: 1

Battery operated: Yes

Battery IEC size: 9 V

(EN)