JW wrote:
On Wed, 30 Oct 2013 20:19:51 +0000 (UTC) Jerry Peters
wrote in Message id: :


There are 3 position wall switches available. The middle position puts
a diode in series to dim the lights, full-on bypasses the diode. My
parents had one of these switches in their dining room, until the
diode opened, when it was replaced with a regular dimmer.

Odd, I have one of those in the bathroom, but the *center* position is
off. Probably from the 1930's or 1940's, but I'm just guessing. The house
originally built in 1850 is knob and tube wiring, much of it replaced with
Romex.

Come to think of it, it may have been center off. Oh boy, knob and tube.
I'm trying to deal with that right now.

Greg