4 Pin Base Compact Fluorescent Light Bulb

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4 Pin Base Compact Fluorescent Light Bulb – One-hundred-and-thirty years back, Thomas Edison completed the first successful sustained evaluation of this incandescent light bulb. With some incremental improvements along the way, Edison’s fundamental technology has lit the world ever since. This is all about to change. We are on the cusp of a semiconductor-based lighting revolution that will finally replace Edison’s bulbs using a far more energy-efficient lighting solution. Solid state LED lighting will gradually replace almost every one the countless billions of incandescent and fluorescent lighting in use around the world these days.

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To know exactly how revolutionary LED light bulbs are as well as why they are still pricey, it is instructive to look at how they are fabricated and also to compare this to the manufacture of incandescent light bulbs. This article explores how incandescent light bulbs are created and then contrasts that procedure with a description of the normal production process for LED light bulbs. So, let’s start by having a look at how conventional incandescent light bulbs are manufactured. You will find this really is a classic example of an automated industrial process refined in over a century of experience.


While individual incandescent light bulb types differ in size and wattage, all of them have the three primary components: the filament, the bulb, and also the base. The filament is made of tungsten. The connecting or lead-in wires are generally made of nickel-iron wire. This wire is dipped to a borax solution to generate the wire more adherent to glass. The bulb itself is made of glass and contains a mixture of gases, generally argon and nitrogen, which increase the life span of the filament. Air is pumped from the bulb and replaced using the gases. A standardized base retains the whole assembly in place. The base is known as the ” Edison screw base” Aluminum is used on the outside and glass used to insulate the interior of the base.

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Initially produced by hand, light bulb manufacturing is currently almost completely automated. |} To begin with, the filament is fabricated with a process called drawing, where tungsten is mixed with a binder material and pulled through a die (a shaped orifice) to a fine wire. Then, the wire is wrapped around a metal bar called a mandrel in order to mold it to its proper coiled shape, and then it is heated in a process called annealing, softening the wire and makes its construction more uniform. The mandrel is then dissolved in acid. Secondly, the coiled filament is connected to the lead-in wires. The lead-in wires have pins at their ends that are either pressed over the conclusion of the filament or, in larger bulbs, spot-welded.

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Third, the glass bulbs or casings are made using a ribbon system. Once heating in a furnace, then a continuous ribbon of glass moves along a conveyor belt. Precisely aligned air nozzles blow off the glass through holes at the conveyor belt to molds, making the casings. A ribbon machine moving at top speed can produce greater than 50,000 bulbs each hour. After the casings are blown, they are chilled and then cut from the ribbon system. Then, the interior of the bulb is coated with silica to eliminate the glare brought on by a luminous, uncovered filament. The wattage and label are then stamped onto the outside top of each casing.