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1.5V TOUCH
ACTIVATED SWITCH)
A single 1.5v silver oxide button cell powers this complete touch
activated switch circuit for 5 years. It features both a normally
open and a normally closed set of solid state switch thermals. It
also has an adjustable sensitivity, which can be set for a touch
capacitance change as small as 1 picofarad.
5V CAPACITANCE
TOUCH ACTIVATED MOMENTARY SWITCH
This circuit is discussed in more detail in the section on Capacitance
Proximity Switch Technology. The circuit is powered from a standard +5v
supply. It has both a source and sink output that change state whenever a
metal button connected to the circuit is touched. An earth ground
reference is required.
12V TOUCH SWITCH EXCITER
CIRCUIT
This circuit is designed to generate a 20KHz pseudo sine wave signal that can power
about 50 remote touch activated switch circuits. It can support a cable length
of about 2500 feet. A typical remote switch circuit is also shown as well as a
receiver circuit for those switches.
