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Capacitance / Human Touch Switch Circuits

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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:

Fastest Finger First Indicator:

Proximity Alarm:

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 Switch #1: electronic device that enables us to control a circuit by simply touching a sensor

Touch Switch #2:

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 Switches:

Touch Triggered Alarm: