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Wednesday, November 28, 2012

Elenco's PK-201 Experiment #21: The One Finger Touch Lamp

This experiment is an improvement of experiment #20. The circuit is completed with one wet finger between two resistors. In addition, to show the basic principle used in touch lamps and touch devices. The lamp does not stay lighted because there is no memory built into the circuit.
 
 
Circuit
 

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