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DiscoverCircuits.com  --   Dave's Circuits
Circuits designed by David Johnson, P.E.

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Last Updated on:  01/01/2009 07:11:19 AM

Capacitance Touch Switches   FET Circuits

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FINGER TOUCH ACTIVATED SWITCH
It does not get any easier if you want a solid state switch that is activated by the touch of a finger. Two small metal pins route voltage through the finger skin to a MOSFET switch. The circuit is great for situations where a membrane type mechanical switch is not desired.

Circuit Finger Activated Switch Circuit designed by Dave Johnson, P.E. (June 3, 2000)

Capacitance Touch Switches   FET Circuits
Master Schematic Category List - David A. Johnson, P.E.

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