Re: Soldering irons: made in America but designed in Russia?

Apr 21, 2009 21 Replies

Yes. We do have some lamps where a vacuum has to be used, because even a coiled coil doesn't enable the filament to run hot enough. They have to be under-run as compared with gas-filled lamps to get a reasonable life, although it's still only 75% of the life of gas- filled lamps. Needless to say, they're horribly inefficient too.

They are standard shape (GLS as we call them) light bulbs of 25W or less. (This means they can be used in the rain without risk of glass shattering, because without any gas-fill to convect heat to the glass, it runs much colder. Commonly used to make up strings of coloured carnival lamps.)

Also the various formats of filament strip lamps, although these are only single coil because they need the filament stretched along the whole length of the tube. (Appalling things which should have gone from the marketplace years ago.)

Andrew Gabriel [email address is not usable -- followup in the newsgroup]

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And thus the quartz halogen lamps. .

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