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Concept
Construction of electronic cigarettes
Summary
An electronic cigarette is a handheld battery-powered vaporizer that simulates smoking, but without tobacco combustion. E-cigarette components include a mouthpiece (drip tip), a cartridge (liquid storage area), a heating element/atomizer, a microprocessor, a battery, and some of them have an LED light on the end. An atomizer consists of a small heating element, or coil, that vaporizes e-liquid and a wicking material that draws liquid onto the coil. When the user inhales a flow sensor activates the heating element that atomizes the liquid solution; most devices are manually activated by a push-button. The e-liquid reaches a temperature of roughly within a chamber to create an aerosolized vapor. The user inhales an aerosol, which is commonly but inaccurately called vapor, rather than cigarette smoke. Vaping is different from smoking, but there are some similarities, including the hand-to-mouth action of smoking and a vapor that looks like cigarette smoke. The aerosol provides a flavor and feel similar to tobacco smoking. There is a learning curve to use e-cigarettes properly. E-cigarettes are cigarette-shaped, and there are many other variations. E-cigarettes that resemble pens or USB memory sticks are also sold that may be used unobtrusively.
There are three main types of e-cigarettes: cigalikes, looking like cigarettes; eGos, bigger than cigalikes with refillable liquid tanks; and mods, assembled from basic parts or by altering existing products. Cigalikes are either disposable or come with rechargeable batteries and replaceable nicotine cartridges. A cigalike e-cigarette contains a cartomizer, which is connected to a battery. A "cartomizer" (a portmanteau of cartridge and atomizer) or "carto" consists of an atomizer surrounded by a liquid-soaked poly-foam that acts as an e-liquid holder. Clearomizers or "clearos", not unlike cartotanks, use a clear tank in which an atomizer is inserted. A rebuildable atomizer or an RBA is an atomizer that allows users to assemble or "build" the wick and coil themselves instead of replacing them with off-the-shelf atomizer "heads".
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