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Last Updated on: Tuesday, June 01, 2021 03:06 PM

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More  Bistable Multivibrator or Flip/Flop Circuits  
Capacitance Touch Switches

3V CAPACITANCE PROXIMITY SWITCH
 
This circuit was designed to provide a touch activated switch function without an external power supply. It draws so little power that a single 3v battery will operate the circuit for many years.  It is discussed in more detail in the section on Capacitance Proximity Switch Technology.

Click on Circuit Below to view PDF of Schematic

3V Touch Switch , Circuit designed by David A. Johnson, P.E. (Feb 12, 2002)

More  Bistable Multivibrator or Flip/Flop Circuits  
Capacitance Touch Switches

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