Simple Lie Detector
R2 5K Pot
R3 1.5K 1/4W Resistor
C1 1uF 16V Electrolytic Capacitor
Q1 2N3565 NPN Transistor
M1 0-1 mA Analog Meter
MISC Case, Wire, Electrodes
- The electrodes can be alligator clips (although they can be painful), electrode pads (like the type they use in the hospital), or just wires and tape.
- To use the circuit, attach the electrodes to the back of the subjects hand, about 1 inch apart. Then, adjust the meter for a reading of 0. Ask the questions. You know the subject is lying when the meter changes.