Preschool kindergarten kids diy human body conductivity experiment electric circuit kit

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The human body conductivity model is a device to test the conductivity of human body. It adopts audions to amplify the micro current and thus drive the LED illuminate.
Usually, the resistance value of human body is about 1700 Ω. Safety voltage is the voltage that can’t cause death or disability of human. Under normal condition, the highest safety voltage that human can contact safely and continuously is 36 V.
Tools needed: screwdriver, scissor, lighter, etc.

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