Inside are two filaments of differnt wattage.
Each contact goes to one filament, the reurn is the base.
low wattage filament - low
high wattage filament - medium
both filaments - high.
that's what i think. Such bulbs are not sold here.
ST
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On Wed, 26 Apr 2006 15:41:07 +0200, lcdpublishing <lcdpublishing@...> wrote:
Last night I got to thinking about 3 way light bulbs - don't ask me
why, I donno.
Anyway, I believe inside it is 3 filements - one for each brightness,
okay, I understand that. One the base of the bulb is two contacts like
a normal bulb. The switch has four positions - off, on1, on 2, and on
3. I have not looked inside a 3 switch/socket, but there can't be too
much in there as there isn't much room.
How does it work?
Like I said, dumb question of the day
Chris
