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A typical 230V halogen capsule in the bathroom of my father home.
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Unlike the ones from North America, this lamp had to have 2 filaments because of the higher voltage of our mains electricity: 230V.
I don't know why the european incandescent lamps don't uses this mothed of filaments, like the 230V halogen capsules to take the advantages of the US vertical filament. But i think that this is a relatively new technology in Europe to have a mains voltage capsules, and also incandescent lamps with two vertical filaments will be expensive.
This specific lamp was made in China. Like all mains voltage capsules, it contains a low gas pressure, meaning that the chance of the lamp to explode is minimal.
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As you can guess these are not my favourite style of lamp, I refuse to use them. ;(
Sean, Philips Clickline 230V capsules are available in 20W and 40W. They have 2,000 hours life.
But they have only 2770K color and their efficiency is only 12.3 Lm/W (EEL=D) for the 40W. But according to the data the Clicklines capsules are made from quartz.