We find out why touch sensitive switches are sensitive to skin, soap and potato but not everything else! Plus we ask how do drinks & exercise affect the taste of your chewing gum?
The common touch-sensitive lamps work by sensing the small AC current which flows through the capacitance of your body when you touch the metal part of the lamp (I can sometimes fell a small tingle, if I touch it lightly).
Why does my touch lamp blink sometimes when itís off? Static-electricity isnít a problem in our house. We do have ~58 year old wiring and two plug outlets. (but I made sure the wide plug terminal is plugged into the neutral.) It happens even when Iím in bed and the lamp is across the room. Itís not a consistent interval between blinks Ė but on the order of 3-4 minutes. David, Thu, 15th Aug 2013