Touch switch

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A touch switch is a type of switch used in many lamps and wall switches that have a metal exterior.

[edit] Overview

These devices work using body capacitance, a property of the human body that gives it great electrical characteristics. The lamp keeps charging and discharging its metal exterior to detect changes in capacitance. When a person touches it, it increases the capacitance, and the lamp activates, increases its brightness, or turns off.

[edit] External links


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