They were actually invented before Edison invented the incandescent light bulb by Nikola Tesla.
Edison did not care for them because they worked only on A.C. and his devices were all D.C.
The other issue with the High efficiency light bulbs were the need for hazardous chemicals inside them, This slowed down the implementation of the bulbs for years.
The first idea The first idea of using a halogen to fill a lamp was in 1933. A practical model was later patent by General Electric in 1959. So basically, although it was just an idea, the first halogen lamp (that used iodine) was invented in 1933.
A 230 watt linear halogen lamp should be replaced by a 230 watt linear halogen lamp if the same brightness is required.
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halogen
LEDs and CFLs use about a quarter of a halogen so the answer is 35-40 watts.
No problem because the 200 watt produces less heat.
1909
fredrick moby
A 230 watt linear halogen lamp should be replaced by a 230 watt linear halogen lamp if the same brightness is required.
There is no halogen microwave. There is a halogen microwave oven bulb. (The technical term for a "bulb" is a lamp.) Some microwave ovens use a halogen lamp to light up the oven cavity. Replacing them is similar to replacing a "regular" incandescent lamp, except that when halogen lamps are being replaced, it is critical not to touch the lamp with bare fingers. Leaving skin oils on a halogen lamp shortens the lamp life and can set up a dangerous situation where the lamp might overheat.
xenon(Z NON) halogen(HAL O JEN)
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because somebody didn't answer
The digital answering machine was invented in 1991 Paste this link to find out more... http://inventors.about.com/od/astartinventions/a/Answering.htm
It is a double ended halogen bulb and I do not know how to get to it to release it from the lamp.
halogen
LEDs and CFLs use about a quarter of a halogen so the answer is 35-40 watts.
No problem because the 200 watt produces less heat.