MadLab Electronic Kit - Lie Detector

You may also like:
WSG112 WSG112
Velleman
WSG150 WSG150
Velleman
WSG135 WSG135
Velleman
WSG119 WSG119
Velleman
WSSA149 WSSA149
Velleman
WSG133 WSG133
Velleman
Price Reduced

$9.95 ea

145 In Stock
More Available – 14 weeks


  • Jameco Part no.: 2251858
  • Manufacturer: MadLab
  • Manufacturer no.: WSG106
  • HTS code: 8543909500
  • Electronics Parts Locator
# of units Price
1+ $9.95
5+ $8.95

Request a Large Quantity Quote

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. A 9V battery is required but not included.

Report a problem
Suggest a product
Specification Value
Design LevelBeginner Level


Report a problem
Suggest a product