In article ,
Les Desser wrote:
Most LE bulbs seem to say: Not suitable for use with dimmers, time
switches or photo cells.

I can understand they are not suitable for dimmers, but what is wrong
with having a time switch or dawn-to-dusk switch turn such bulbs on and
off?

In article , "Dave Plowman (News)"
Sun, 21 Jun 2009 18:34:59 writes

Not really to do with the CFL but the design of the time switch, etc. Many
of these are designed to replace a simple light switch so get their
neutral feed to their electronics via the tungsten lamp filament. The
current is so low that the ordinary bulb doesn't light up. But a CFL
doesn't have the same low 'not in use' resistance - so strange things
could occur. It's easy enough to switch CFLs with any of these devices but
involves some rewiring to provide a dedicated neutral to the switching
device and a mechanical relay to do the switching - the coil of the relay
replacing the tungsten lamp.

Thank you and Toby for your clear responses which confirms what I
thought - that for "proper" circuits there should be no problem.

--
Les Desser
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