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Lie Detector Circuit Using Two Transistors

Lie Detector Circuit Using Two Transistors

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  •  May 7, 2019
  •  Lie Detector Circuit Using Two Transistors
  •  Posted by Marcel at 4:41 am
  •  No Responses
  •  Detector Circuits
  •  Tagged with: sensor, transistor

Lie detector circuit using two transistors

This simple lie detector consists of two transistors and other additional components and can detect if a person does not tell truth (the person is lying), using two sensors placed directly on the skin.

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Humidity sensor circuit using the 555 timer

Humidity sensor circuit using the 555 timer

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  •  September 6, 2018
  •  Humidity sensor circuit using the 555 timer
  •  Posted by Marcel at 11:44 am
  •  2 Responses
  •  Detector Circuits
  •  Tagged with: sensor

This simple humidity sensor circuit using a 555 timer, shows us the humidity level that a ground under test has. To achieve the goal, a couple of probes are used.

These probes are placed on the ground to be tested.

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