Applications of Discharge Lamp
- The most prominent usage of these discharge lamps are neon signs
- Discharge lamps are extensively effective in providing a high range of luminosity
- Implemented in many domestic and commercial applications
- Used in sodium lights those deliver orange spark which we observe on streetlights
- These discharge lamps are used in the applications to create reduced pressure and steady levels of luminosity
What are high-intensity discharge lamps?
High-intensity discharge lamps ( HID lamps) are a type of electrical gas-discharge lamp which produces light by means of an electric arc between tungsten electrodes housed inside a translucent or transparent fused quartz or fused alumina arc tube. This tube is filled with noble gas and often also contains suitable metal or metal salts.
Can high-intensity discharge lights be used outdoors?
In the case of high-intensity discharge lamps, outdoor arenas can be lit using lamps with extremely high voltages. These bulbs can also be used for smaller outdoor areas and warehouses, as well as on roadways to create long-lasting, high-intensity illumination.
What are the advantages of discharge lights?
The best part of the discharge lamps, it can produce lights of different colors. Due to its working principle, it is cheap, long-lasting, and can be used for a number of applications. For a period, these discharge lamps are even used in aircraft and vehicles.
What is a discharge lamp and how does it work?
What is the Discharge Lamp? Discharge lamps come under the classification of artificial light sources that produce light by transmitting an electrical discharge via ionized gaseous substances. Usually, those lamps make use of either xenon, argon, krypton, neon, or a combination of these gases.
Are there LED bulbs to replace high-intensity discharge?
HID replacement (HID/R) bulbs: These LEDs replace the bulbs in high-intensity discharge lamps, which are typically used in bright overhead fixtures that stay on for long durations, such as the lighting in parking garages and warehouses.
Is the most commonly used discharge lamp?
The fluorescent lamp is perhaps the best known gas-discharge lamp. The spectral energy distribution of the electrical discharge lamp depends primarily on the type of vapour or gas, vapour pressure, the nature of electrode and the electrical energy.
What lamps are considered high-intensity discharge?
Types of High-Intensity Discharge LampsMercury vapor lamps. Mercury vapor lamps are widely used to light both indoor and outdoor areas such as gymnasiums, factories, department stores, banks, highways, parks, and sports fields. ... Metal Halide lamps. ... High-Pressure Sodium (HPS) Lamp.
Where is discharge lighting used?
High pressure discharge lamps Applications include indoor lighting of high buildings, parking lots, shops, sport terrains. High pressure mercury-vapor lamps are the oldest high pressure lamp type and have been replaced in most applications by metal halide and the high pressure sodium lamps.
What are the three types of high-intensity discharge lamp?
HID lamps are produced in three types – mercury vapor (MV), high pressure sodium (HPS) and metal halide (MH). Of these, MV and MH are considered white-light sources (although the MV exhibits poor color rendering) and HPS produces a yellow-orange color light.
What are the advantages of high-intensity discharge light bulbs?
The fact that they can be used in All-Weather operation. They are extremely bright emitting as much as 130,000 lumens from a 1000 watt bulb. They are extremely efficient at up to efficacy rates of 150 lumens per watt.
Is LED lamp is a discharge lamp?
Neon lamps for signs are also electric discharge lamps. The light-emitting diode (LED) is a form of luminescent lamp. The device is a crystalline semiconductor diode; when current flows through the diode, electrons combine with “holes” (localized positive charges) and drop to a state of lower energy.
Is LED is a discharge lamp?
LED gas-discharge lamps are an ideal alternative to conventional gas-discharge and HID lamps. Traditionally, gas-discharge lamps are used in industrial settings as well as retail. Since 2015, more and more of them have been phased out due to the harmful substances they contain as well as their inefficiency.
What is better HID or LED?
Technology: LED lights use electricity while HID uses gas (typically xenon). Energy use: Both have high energy use compared to halogen, but LEDs are slightly more energy-efficient. Life span: LED lights might last up to 45,000 hours while HIDs have a life span of around 15,000 hours.
What are the four types of HID lamps?
There are five main types of HID lamps:Metal halide.High pressure sodium.Low pressure sodium.Mercury vapor.Ceramic metal halide.
Is HID brighter than LED?
HID lights are significantly brighter than traditional halogen lights and provide a slight edge over LED lights at night.
What are the advantages of discharge lamps?
Advantages of Electric Discharge LampsElectric discharge lamps have longer life.There operating cost is low.Electric discharge lamps can be designed for different colors.Electric discharge lamps produce less heat.They can be used for a number of applications.
How do high-intensity discharge lamps work?
What are they? HID, or high-intensity discharge light bulbs and lamps, are a family of gas-discharge arc lamps which create light by sending an electrical discharge between two electrodes and through a plasma, or ionized gas.
What is the purpose of electrical discharge experiment?
Main objective in µ-EDM is to minimize the erosion of workpiece in a single discharge while EDM maximizes the erosion of workpiece so as to minimize machining time.
Is HID same as xenon?
HID is a type of light fixture that creates brighter light, and lasts longer, while Xenon is a subtype of HID that contains Xenon gas instead of the other alternatives.
How long do HID ballasts last?
How long do HID ballasts last? Some survive for 3-5 years. If they're well-maintained, ballasts typically last for up to 20 years.
What voltage do HID lights use?
An HID light takes 12 volts from the vehicle and steps it up to 25,000 volts. When vehicles with these lights have been in a collision they can and will electrocute a firefighter because of the amount of power that resides in them.
How long do HID headlights last?
6,000 hours to 24,000 hoursHID lights have good lifespan relative to some bulbs but not compared to LED. Typical lifespan values range from 6,000 hours to 24,000 hours before a bulb requires replacement.
What is a disadvantage of high energy discharge light?
Disadvantages: Poor Color - HPS bulbs have an orange glow which is difficult for the eye to see. HPS lit areas always seem to be appear dull and dim. Poor Lumen Maintenance - HPS bulbs will lose a considerable amount of light output before they completely burn out.
Do HID lights dim over time?
Do Xenon HID Bulbs lose brightness and dim over time? Yes, over time a Xenon HID bulb can lose some brightness and colour intensity as they begin to age. We find that branded bulbs like Osram Xenon HID Bulbs degrade a lot less than cheap unbranded Xenon HID Bulbs.
Which are the lamps that are mostly used why?
LED lamps are mostly used because of low energy consumption, low energy loss, less environmental pollution. Was this answer helpful?
Which lamp is a gas discharge lamp?
The electric discharge lamp is also known as vapor lamp or gas-discharge lamp. Actually, the electric discharge lamp is family of artificial light sources that generates light by sending an electric discharge through an ionized gas.
What does discharge lamp mean?
Definition of discharge lamp : an electric lamp in which an enclosed gas or vapor glows or causes a phosphor coating on the lamp's inner surface to glow.
How does a deuterium lamp work?
A deuterium lamp uses a tungsten filament and anode placed on opposite sides of a nickel box structure designed to produce the best output spectrum. Unlike an incandescent bulb, the filament is not the source of light in deuterium lamps.
What is a high intensity discharge lamp?
High intensity Discharge Lamp refers to a high-pressure gas discharge lamp that is filled with a mixture of inert gases including xenon, but does not have the filament of a halogen lamp, referred to as HID xenon lamp. It can also be called a metal halide lamp. Divided into xenon lamps for automobiles and xenon lamps for outdoor lighting.
What is a xenon headlamp?
Xenon lamps are also called HID gas discharge headlamps in the field of automotive lamps. It replaces traditional tungsten filaments with high-pressure xenon gas wrapped in a quartz tube to provide higher color temperature and more concentrated lighting. Because the xenon lamp uses a high-voltage current to activate the xenon gas to form an arc, it can continuously discharge light between the two electrodes. The power of an ordinary car tungsten bulb reaches 55 watts, while the xenon lamp only needs 35 watts, which is nearly a half.
Why is a xenon lamp not scrapped?
Because the xenon lamp has no filament, it will not cause the problem of being scrapped due to the broken filament. The service life is much longer than that of the halogen lamp. The service life of the xenon lamp is equivalent to the entire running time of the average car cycle.
How many watts does a xenon headlight use?
Because the xenon lamp uses high-voltage current to activate the xenon gas to form an arc, it can continuously discharge light between the two electrodes. The power of an ordinary car bulb reaches 65 watts, while the xenon lamp only needs 35 watts, which is nearly doubled. Xenon lamps can significantly reduce the burden on the vehicle’s electrical system.
What is the diameter of Xenon auxiliary lights?
The xenon auxiliary lights are mainly high beams, and the outer diameter is generally as small as 80-90 mm and as large as 200 mm. They can be suitable for trucks, off-road vehicles, cars and other different models.
What is program controlled ballast?
In 2013, the most intelligent electronic ballast launched on the market is the “program-controlled ballast”, which uses modern computer technology to compile a specific program to implant a chip to control the circuit, so that it can complete detection, calculation and automatic matching of xenon lamps, thereby To achieve the best performance between the two
How many levels are there in the modification of car lights?
The modification of car lights is divided into three levels:
How effective are discharge lamps?
Discharge lamps can be highly effective at maintaining luminosity for an extended period. Their applications extend across a range of domestic and commercial areas and are affected by the type of gas being used.
What is discharge lamp?
What are some of the main uses for discharge lamps? This type of lamp involves an internal electrical discharge being created between two electrodes in a gas-filled chamber; the level of intensity generated by a discharge lamp can vary and can range from low-level wattage bulbs through to extreme intensities that can be used for filling large areas with light.
What type of light can produce orange light?
For example, mercury discharge lamps can provide particularly high levels of brightness for outdoor use, as can sodium lights , which can produce the orange glow seen on streetlamps. Fluorescent lights can also be used to create low pressure and constant levels of luminosity.
Can outdoor arenas be lit with high voltage?
In the case of high-intensity discharge lamps, outdoor arenas can be lit using lamps with extremely high voltages. These bulbs can also be used for smaller outdoor areas and warehouses, as well as on roadways to create long-lasting, high-intensity illumination.
Do discharge lamps overheat?
Whatever the usage of a discharge lamp, it is crucial to be able to understand the different amounts of current and voltage that are being used; high-intensity discharge lamps are particularly susceptible to overheating and should be carefully monitored using ir on ballasts and control gears.
Why do HID lamps need a ballast?
HID lamps require a ballast in order to generate the initial surge of electricity needed to start them and to regulate their power during normal operation.
What color is a HID lamp?
Since most HID lamps produce light which is either very cool white/blue or warm white/yellow, they are generally not used in applications where the aesthetic quality of light is important.
What is a HID light bulb?
HID, or high-intensity discharge light bulbs and lamps, are a family of gas-discharge arc lamps which create light by sending an electrical discharge between two electrodes and through a plasma, or ionized gas.
What gases can be used to increase light output?
At the time, the lamp was filled with air, but it was later discovered that the light output could be increased by filling the lamp with noble gases, such as neon, xenon, argon, or krypton. Modern HID technology has further increased light output through experimentation in gas mixtures and improved electrodes, but the functional basics ...
Why are discharge lamps so effective?
For the reason of intense light, these lamps have are highly effective, and are mostly used in huge indoor spaces and outdoor lighting purposes. As these discharge lamps need somewhat more time to create, they are appropriate for the application where they can remain for long hours.
What is discharge lamp?
Discharge lamps come under the classification of artificial light sources that produce light by transmitting an electrical discharge via ionized gaseous substances. Usually, those lamps make use of either xenon, argon, krypton, neon, or a combination of these gases.
How effective are HID lamps?
These lamps make use of electric arcs to deliver an intense range of light. Similar to fluorescent lamps, these also need ballasts. When initially turned on, these lamps require almost 10 minutes of time to generate light due to the reason that the ballast requires time to create the electric arc. For the reason of intense light, these lamps have are highly effective, and are mostly used in huge indoor spaces and outdoor lighting purposes. As these discharge lamps need somewhat more time to create, they are appropriate for the application where they can remain for long hours. The luminous effectiveness of the HID lamp is almost 3 times more than that of a halogen light, and this lamp life period is nearly 2000 h, which is only 300–700 h for a halogen light.
What is a xenon flash lamp?
A xenon flash lamp generates a flashlight either in the range of 10 -3 or 10 -6 and they are mainly employed for film and theatrical lights. Specifically, strong lamp versions called strobe lights can deliver a long period of flashes thus permitting the stroboscopic analysis of the motion. This is the example of a discharge lamp.
What is the pressure of a discharge lamp?
Mostly, fluorescent lamps which will be at domestic and office spaces function at an atmospheric pressure level of 0.3% and they generate nearly 100 lm W -1. Whereas minimal pressure range of sodium lamps which are the most powerful discharge lamps deliver nearly 200 lm W -1, but these have reduced color rendering characteristics.
How much power does a halogen lamp save?
Generally, these are highly efficient lamps and they hold a tendency to provide extended service life for any type of these lamps. They will save almost 80 percent of lighting power when they are substituted in the incandescent lamps.
What elements are used in lamps?
Most of the lamps were filled up with other elements such as sodium, mercury, or other halide materials . To the basic functionality when the gas gets combusted and free electrons when gets speeded up by the electric field present in the tube, they have a collision with the gas and the metal substances.
What is a high intensity discharge lamp?
High-intensity discharge (HID) lamps are similar to fluorescents in that an arc is generated between two electrodes. The arc in an HID source is shorter, yet it generates much more light, heat, and pressure within the arc tube.
What element is used in HPS lamps?
Sodium, the major element used, produces the "golden" color that is characteristic of HPS lamps. Although HPS lamps are not generally recommended for applications where color rendering is critical, HPS color rendering properties are being improved. Some HPS lamps are now available in "deluxe" and "white" colors that provide higher color temperature and improved color rendition. The efficacy of low-wattage "white" HPS lamps is lower than that of metal halide lamps (lumens per watt of low-wattage metal halide is 75-85, while white HPS is 50-60 LPW).
How many lumens does a 400 watt lamp produce?
The efficacy of the HPS lamp is very high (as much as 140 lumens per watt.) For example, a 400-watt high pressure sodium lamp produces 50,000 initial lumens. The same wattage metal halide lamp produces 40,000 initial lumens, and the 400-watt mercury vapor lamp produces only 21,000 initially.
What are the disadvantages of metal halide lamps?
Good color rendering. Wide range of wattages. The rated life of metal halide lamps is shorter than other HID sources; lower-wattage lamps last less than 7,500 hours while high-wattage lamps last an average of 15,000 to 20,000 hours.
How many lumens does a metal halide lamp have?
The efficacy of metal halide lamps ranges from 50 to 115 lumens per watt , typically about double that of mercury vapor. Because of the good color rendition and high lumen output, these lamps are good for sports arenas and stadiums. Indoor uses include large auditoriums and convention halls.
What is a metal halide lamp?
Metal Halide lamps. Metal Halide lamps are similar to mercury vapor lamps but use metal halide additives inside the arc tube along with the mercury and argon. These additives enable the lamp to produce more visible light per watt with improved color rendition.
How long does it take to restrike a HID lamp?
This process of restriking takes between 5 and 15 minutes, depending on which HID source is being used. Therefore, good applications of HID lamps are areas where lamps are not switched on and off intermittently.
What is discharge lamp?
As shown in the diagram, a discharge lamp consists of one gas tube, wherein a gas at low pressure is maintained. The gas tubes are filled with noble gasses like argon, neon, krypton, etc. Additionally, they are also filled with sodium mercury amalgam.
How does a discharge lamp work?
The Discharge lamps are one of the reliable sources of artificial light energy, which fundamentally works by converting electrical energy to light energy by ionizing the gas particles. Discharge lamp gained popularity, in the mid-twentieth century. The best part of the discharge lamps, it can produce lights of different colors.
What is mercury lamp?
We shall see the high-intensity discharge lamps for this case. The mercury lamps are mostly used for street lighting due to their long span of life. They provide about 50 lumens per watt. They also provide huge energy savings while usage. The metal halide lamps are mostly used for indoor purposes like stadiums, outdoor areas, sports facilities, etc.
How many lumens does a low pressure discharge lamp produce?
Like the fluorescent lamps, and the sodium lamps. They produce 200 lumens per watt. One advantage of low-pressure discharge is they have a long life span. The low-pressure discharge lamps require the ballast to create a high voltage. Ballasts fundamentally work on the principle of inductance.
How long does it take for a high intensity lamp to reach peak voltage?
The ballast helps to build up the high voltage. For this reason, when turned on, the high-intensity lamps take up to ten minutes to reach peak value. The high-pressure mercury vapor lamp, metal halide lamps, and high-pressure sodium lamps are some of the examples of high-intensity lamps.
What does the ellipse on a discharge lamp represent?
Symbolically a discharge lamp is shown as above. It has shown an ellipse, representing the glass tube, and two symbols at the end representing the electrodes.
What is high intensity discharge?
High-intensity Discharge. The high-intensity discharge lamps are very efficient as compared to pressure based discharge lamps. They have a long life span and can save a lot amount of energy. The high-intensity lamps use an arc array to produce intense light.
