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

Master Category List - Dave's Circuits
 Last Updated on: Friday, July 18, 2008 11:34 AM


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 Drawing Below to view PDF version of Schematic

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

Bistable Multivibrator or Flip/Flop Circuits   Capacitance Touch Switches

Master Schematic Category List - David A. Johnson, P.E.
 

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