🚀 go-pugleaf

In article <1992Apr8.155120.29611@EE.Stanford.EDU> siegman@EE.Stanford.EDU
(Anthony E. Siegman) writes:

>(I don't know the answer, but would hazard a guess that there's no
>true hysteresis in the bulb itself.)

I don't know the answer either, but I'd put money on that guess. Does
the dimmer you're using work by interrupting the current with an SCR
circuit of some kind? I know that I've got one of those in my house.
If you leave the dimmer set at a sub-threshhold level for a long time
does the light eventually come on, dimly? 

I have noted the same behaviour in some of my dimmers (but not all!)
and I will have to try that experiment. If the light eventually comes
on I can explain it easily (there's no hysteresis). Otherwise I'd bet
the hysteresis is inherent to either the controller alone or to it
and the non-ohmic lightbulb.

Leigh