Touch Lamp
A touch-lamp is attractive because it uses a combination of static electricity and electric current to sense your touch. It detects your touch by looking for changes in the electric properties of the lamp's surfaces. And it monitors these properties by putting a fluctuating electric charge on them. As electric current flows through the lamp's wires toward the bulb, it passes through an electronic device that places a high frequency (about 60 kHz) alternating current onto those wires. This added current causes the lamp's surfaces to take on a little fluctuating electric charge--first positive, then negative, then positive, over and over again. This surface charging involves electrostatic forces, which extend long distances between charged objects, and occurs even though the lamp's surfaces are not directly connected to the lamp's wires. The more surface the lamp has, the more simply it can hold that electric charge--the greater the lamp's electric capacitance.
When you plug the lamp in, the electronic device uses its fluctuating charge to resolve how easy it is to add or subtract charge from the lamp's surfaces. In other words, it measures the lamp's capacitance and then begins to look for changes in that capacitance. When you touch the lamp, or even come close to its surfaces, your body efficiently adds to the lamp's surface and its capacitance increases significantly. The electronic device detects it’s increase in capacitance and switches the lamp's state from on to off or from off to on. The fact that you do not have to touch the lamp to affect its capacitance means that a touch lamp can have insulating paint on its metal surfaces yet still detect your touch. You can also purchase touch lamp modules that plug into the wall and turn the lamp that's connected to them into a touch lamp. These modules are so responsive to capacitance changes in the lamp that you can trigger them just by touching the lamp cord.
Add the ease of touch control to your favorite lamps and forget about fumbling with tiny knobs and switches you can never find. With our usual Touch Lamp Control Switch you can light up a room by tapping the metal base or pole of your bedside lamp or sofa reading lamp. Each successive tap to any metal part steps your lamp through three brightness levels low, medium, high and then off. Installation is as easy as changing a bulb, tools or wiring is not necessary. The Touch Lamp Control Switch Deluxe is for utilize with all lamps. Light up a room by touching any element of the lamp, even the cord. just plug your lamp into the adapter and then plug the deluxe touch lamp switch into any outlet.