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Different type of lamps
1. Different Type of Lamps
Guided by- Designed by-
Ghanshyam Sir(E.T) Digant Goradia
(130080116010)
2. Contents
• History
• Different types of lamps with details
Incandescent lamp
Fluorescent lamp
Compact fluorescent lamp
High-Intensity Discharge lamp
Low-pressure Sodium lamp
High-pressure Sodium lamp
Light Emitting Diodes(LED)
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3. History
• The first incandescent lamp was invented by Thomas Alva Edison and Joseph
Swan in nineteenth century.
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4. Incandescent lamp
• Produce heat and brightness with help of filament named Tungsten.
• When current is passing through this filament, it produces light.
• The hot filament is protected from oxidation with glass which is filled with gas.
• Capacity~700 to 1000 hours
• Temperature reaches at about 2200°C.
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6. Halogen lamps
• High intensity / long life globes are called tungsten halogen or quartz halogen.
• These lamps are filled with a halogen gas, usually Krypton.
• Halogen bulbs are much brighter than incandescent,
and are much more energy efficient for the
amount of light produced.
• Halogen headlamps are used in many
automobiles.
• Capacity~ two or three times more than
Incandescent lamps.
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8. Fluorescent lamps
• The most common application of this technology is in tubular fluorescent lamps.
• The main benefit of a fluorescent bulb is its long life.
• Fluorescent bulbs are very efficient and produce little heat.
• Capacity~ between 10000 and 20000 hours.
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9. Working of Fluorescent lamps
• Fluorescent bulbs are filled with argon gas and when electricity is passed
through, a small amount of mercury in the tube produces ultraviolet radiation
which in turn causes the phosphorous coating of the tube to give off light.
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11. Compact Fluorescent Lamps
• A Compact Fluorescent Lamp (CFL) has the characteristics and advantages of
linear fluorescent lamps but its compact size is achieved by folding the
discharge path, retaining high efficacy.
• A 20-25 watt CFL is approximately equivalent to a 100 watt incandescent bulb.
• Working principle is same as fluorescent lamps.
• Capacity up to 10000 hours.
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13. High-Intensity Discharge Lamps
• The inner tube is filled with various metals and when the metals heat to the point
of evaporation, the bulb produces light.
• At high pressure, the mercury discharge is mainly blue and green radiation.
• HID lamps are used to light sports fields, parking lots and roadways.
• All high-pressure mercury lamps take time to reach full output.
• Capacity~ 20000 hours
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15. Low-pressure Sodium lamp
• LPS lamps produce light through a very similar process as a fluorescent.
• They emit a very yellow light and require a ballast like a fluorescent bulb.
• LPS lamps are used when the highest efficiency light is needed.
• Most LPS lamps are used for driveways,
parking lots and pathways.
(reason: there is no need color at these
place.)
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16. High-pressure Sodium lamp
• High-pressure sodium (HPS) lamps are smaller and contain additional elements
such as mercury.
• It produces a dark pink glow when first struck, and an intense pinkish orange
light when warmed.
• As the sodium pressure is increased, the
radiation becomes a broad band around
the yellow peak, and the appearance is
pinkish orange.
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17. LED (Light Emitting Diodes)
• LED bulbs are the light of the future.
• They do not have a filament and can give off nearly with different lights.
• They consume the least amount of electricity and produce the least amount of
heat.
• LED bulbs have a very long life.so it’s the next
future.
• LED bulbs can come in a wide variety of colors and
can be used when colored accent lighting is needed.
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