What is par for lightbulbs
Lexicon of Codes - Symbols - Abbreviations
The size of the bulb socket is indicated on the packaging as well as on the bulb socket.
This size is encoded with the capital letter "E."and a number that indicates the thread socket diameter in millimeters."E."stands for the inventor E.dison, who invented the first commercially viable light bulb in 1879. According to DIN 40400, "E" stands for electrical thread.
The actual invention of the incandescent lamp is attributed to the German-American Heinrich Goebel, who invented the incandescent lamp before Edison in 1854 using a charred bamboo fiber as a filament.
However, this widespread version of the invention was skilfully directed during the Nazi era, with the result that the actual inventors and researchers and their experiments were pushed into the background.
A well-researched development history and correction of the incandescent lamp invention can be found at
When buying an incandescent lamp or a compact fluorescent lamp, the information attached to the lamp (screw) socket about the size to be used (e.g. E 27), the electrical voltage in volts (e.g. 230 V) and the maximum permissible Observe power in watts (e.g. max. 60 W).
E 5.5 Small lamps / Lilliput lamps (e.g. for instrument lighting).
E 10 Low-voltage lamps (e.g. for flashlights, bicycle lamps).
E 14 Mignon base. Candle lamps, decorative lamps (up to approx. 40 watts), compact fluorescent lamps.
E 27 Edison base. Normal lamps, reflector lamps (from approx. 40 watts), compact fluorescent lamps.
E 40 Goliath socket. Floodlight lamps from 250 watts.
|Luminosity comparison table between|
Incandescent lamps and compact fluorescent lamps (ESL = energy saving lamps
|Lightbulb||Compact fluorescent lamp with electronic ballast (EVG = electronic ballast)|
|25 watts||corresponds to 5 watts|
|40 watts||corresponds to 7 watts|
|50 watts||corresponds to 9 watts|
|60 watts||corresponds to 11 watts|
|75 watts||corresponds to 15 watts|
|100 watts||corresponds to 20 watts|
|120 watts||corresponds to 23 watts|
|Compact fluorescent lamps thus save up to 80% electricity, depending on their design, and have a burning time that is 3 to 15 times longer than conventional incandescent lamps (according to the manufacturer) with significantly reduced heat radiation. The disadvantage, however, is the decrease in luminosity with aging. This can be as low as 80% of the brightness when new after 1,000 operating hours.|
|The aim is to increase the use of energy-saving fluorescent lamps EU eco-label|
(stylized daisies: 12 blue stars, the Europe E in the middle).
Award criteria are: efficiency,
Because of the poisonous mercury it contains, the electromagnetic radiation and the burning time, which is too cheap compared to conventional incandescent lamps, consumer protection groups have massive concerns about the use of these lighting means.
Note! In the period between September 1, 2009 and September 1, 2018, conventional incandescent lamps and halogen lamps were gradually banned in the EU. After that, only particularly efficient lamps are permitted.
Compact fluorescent lampsthat start with the capital letter "Tbsp" (= elelectric detonator) or "electronic" have an integrated electronic ballast (EVG). The advantages are a longer service life, no flicker and a high degree of efficiency.
Halogen light bulbs with IRC technology (I.nfra-R.ed-C.oating = infrared coating) have significant advantages over standard halogen bulbs in terms of service life, heat generation, light yield and lower power consumption due to the special glass bulb inner coating.
Furthermore, the amount of light emitted by a light source is shown on the packaging in the unit of measurement "Lumens"(lat .: light) with the abbreviation lm (Φ) specified.
With the lumen specification, illuminants can be compared with one another.
|Light source||Φ luminous flux|
|Wax candle||10 lm ☀|
|Light emitting diode (LED) 1 W||50 lm ☀|
|Light-emitting diode (LED) 3 W||150 lm ☀|
|Light-emitting diode (LED) 4 W||300 lm ☀|
|Light-emitting diode (LED) 5 W||400 lm ☀|
|Light-emitting diode (LED) 8 W||600 lm ☀|
|Light-emitting diode (LED) 9 W||750 lm ☀|
|Light-emitting diode (LED) 10 W||1,000 lm ☀|
|Light-emitting diode (LED) 15 W||1,500 lm ☀|
|Incandescent lamp 15 W||120 lm ☀|
|25 W incandescent lamp||230 lm ☀|
|40 W incandescent lamp||430 lm ☀|
|60 W incandescent lamp||720 lm ☀|
|Incandescent lamp 75 W||930 lm ☀|
|100 W incandescent lamp||1,350 lm ☀|
|Energy saving lamp 9 W||400 lm ☀|
|Energy saving lamp 11 W||600 lm ☀|
|Energy saving lamp 15 W||900 lm ☀|
|Energy saving lamp 20 W||1,200 lm ☀|
|Energy saving lamp 23 W||1,500 lm ☀|
|12 volt halogen lamp 12 W.||140 lm ☀|
|12 volt halogen lamp 20 W||350 lm ☀|
|12 volt halogen lamp 50 W||950 lm ☀|
|12 volt halogen lamp 100 W||2,500 lm ☀|
|20 W fluorescent lamp||1,200 lm ☀|
|40 W fluorescent lamp||5,000 lm ☀|
|100 W fluorescent lamp||3,000 lm ☀|
|High pressure mercury lamp 250 W||13,000 lm ☀|
|High pressure mercury lamp 1,000 W||58,000 lm ☀|
|High pressure sodium lamp 1,000 W||130,000 lm ☀|
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