An energy-saving lamp, also known as a compact fluorescent lamp (CFL), contains an electronic ballast that plays a key role in its operation. When the lamp is turned on, the ballast first heats the filament inside the bulb. This heating process causes the filament to emit electrons, which are then accelerated and collide with argon gas molecules inside the tube. These collisions generate energy, which in turn excites the mercury atoms present in the lamp. As the mercury atoms become ionized, they form a plasma state, allowing electricity to flow through the tube.
Once the plasma is formed, the electrical current passes through it, causing the mercury vapor to emit ultraviolet (UV) light at a wavelength of 253.7 nanometers. This UV light then strikes the phosphor coating on the inner surface of the glass tube. The phosphor absorbs the UV light and re-emits it as visible light, making the lamp glow. Unlike traditional incandescent bulbs, which rely on a heated filament to produce light, CFLs operate at much lower temperatures—around 1,160 K compared to 2,200–2,700 K for incandescent lamps. This reduced heat generation significantly extends the lifespan of the lamp, often exceeding 5,000 hours.
Another major advantage of energy-saving lamps is their high energy efficiency. They use advanced electronic ballasts that minimize energy loss and avoid the thermal effects seen in incandescent bulbs. With a luminous efficacy of over 50 lumens per watt, CFLs consume far less power while producing the same amount of light, making them a more sustainable and cost-effective lighting option.
LED Wall Lights
Outdoor Wall Lights have no wiring fetters and no additional electricity costs. They only need to be fixed on the wall where the sun can shine to provide you with reliable lighting for a long time.
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