On Tuesday, 1 November 2016 14:53:40 UTC, whisky-dave wrote:
On Tuesday, 1 November 2016 14:07:55 UTC, tabby wrote:
On Tuesday, 1 November 2016 13:22:04 UTC, whisky-dave wrote:

Now your point about mercury lamps was what that yuo can buy them as kitchen lighting to replace tungston or LEDs was it ?

FWIW you used to able to buy those. They had a filament lamp in series with the mercury all in one envelope. Mad idea.

Well that explains why Dave Plowman has them, any idea what the filiment was made of and can they be dimmed ?

Obviously the filament was tungsten. No, you can't dim old school discharge lamps on basic ballasts.


NT