Monday, December 3, 2012

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.

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

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