On Saturday 28 July 2007 23:10, Ethan Dicks wrote:
On 7/28/07, Dave McGuire <mcguire at
neurotica.com> wrote:
You wrote:
Then there were the "bulb
savers"--small discs probably containing
nothing more than a carbon resistor
I've seen products that match this description (in the US) that
contain a diode, which gets placed in series with the bulb. They
work great if you like dim yellow light.
Dim, yellow, _flickering_ light. ;-)
Sometime in the late 1960s or early 1970s, my dad made a "light
dimmer" that was just a metal project box, a diode (half-wave
rectifier) and a toggle switch. Flip the switch for full brightness,
flip again for "dim". It worked fine, for what it was, but the dim
light wasn't that good to read by.
I remember building one of those...
It was one of the first practical applications I found for those center-off
toggle switches I started finding in some of the parts stores I used to
browse in. :-)
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin