What is a Universal Halogen Spot Lamp?

A Universal Halogen Spot Lamp is a shining uplighter containing a tungsten thread closed in a dense see-through covering that is complete with a combination of an inactive vapor and a minor quantity of a halogen, such as iodine or bromine. The grouping of the halogen air and the tungsten thread crops a halogen-series organic response, which redeposits vanished tungsten on the thread, snowballing its lifespan and upholding the clearness of the covering. This permits the thread to function at a developed malaise than a normal glowing uplighter of comparable influence and working lifespan; this also crops sunlit with advanced glowing effectiveness and color malaise. The minor scope of the Universal Halogen Spot Lamp certificates their usage in compressed visual schemes for projectors and lighting. The minor glass covering may be bounded in a much greater external glass rhizome, which has an inferior malaise, defends the inner rhizome from pollution, and makes the rhizome automatically more alike to a conservative lighter. Normal and halogen glowing rhizomes are much less well-organized than LED and dense glowing uplighters, and so have been or are being phased out in many seats.

In normal glowing uplighters, dispersed tungsten typically bonds onto the internal surface of the rhizome, producing the rhizome to darken and the thread to nurture progressively feeble until it finally splits. The attendance of the halogen, though, gangs up a rescindable organic response series with this vanished tungsten. The halogen series keeps the rhizome spotless and reasons the sunlit production to continue almost continuously through the rhizome's lifetime. At reasonable temperatures the halogen responds with the vanishing tungsten, the halide shaped being enthused about in the sluggish gas packing. At some fact, though, it will grasp advanced temperature sections within the rhizome where it then distances, freeing tungsten back onto the thread and exempting the halogen to replicate the procedure. Though, the general rhizome covering temperature must be meaningfully advanced than in conformist glowing uplighters for this response to thrive. 

The rhizome found with Universal Halogen Spot Lamp suppliers must be completed of bonded silica (quartz) or a high-melting-point crystal. In the meantime, quartz is robust, the air compression can be advanced, which decreases the degree of vanishing of the thread, authorizing it to run an advanced temperature (and so glowing effectiveness) for the same typical lifetime. The tungsten unrestricted in warmer areas does not usually redeposit where it originated from, so the warmer shares of the thread finally shrill out and nose dive.

Quartz iodine uplighters, consuming rudimentary iodine, were the first saleable Universal Halogen Spot Lamps started by GE in 1959. Fairly rapidly, bromine was unearthed to have compensations but was not expended in the rudimentary method. Positive hydrocarbon bromine mixtures gave decent consequences. Renewal of the thread is also likely with fluorine, but its organic reactivity is so countless that other shares of the uplighter are confronted. The halogen is usually varied with a principled air, frequently krypton or xenon. The first Universal Halogen Spot Lamps found with Universal Halogen Spot Lamp dealers expended only tungsten for thread provisions, but some enterprises used molybdenum. 

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Created on Dec 29th 2021 03:35. Viewed 142 times.

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