Electronic Circuits and Tutorials
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Electronics Schematics - T
Sensors
and Detectors:
Capacitance & Touch Switch Circuits
3 Way Touch Lamp: A three-way switch to
control a lamp (off-dim-bright, etc.) uses an
NE555 Timer to generate a1-second pulse,
triggered by ambient ac fields that are picked
up by the human body. Read also the circuit
description.
Alarm Touched Triggered:
Capacitance Proximity Alarm:Capacitive Sensor: Special design for shop-windows animation Useful for many types of touch controls
Fastest Finger First Indicator: Three Way Touch Lamp: A three-way switch to control a lamp (off-dim-bright, etc.) uses an NE555 Timer to generate a1-second pulse, triggered by ambient ac fields that are picked up by the human body. Read also the circuit description.Touch Activated Alarm:
Touch Dimmer: Touch Switch #3:Touch Switch #4: This is achieved using a jugfet, it is a very simple circuit and very effective to with a minimum component count working via a 1.5v cell.
Touch Switch using Transistors: