Re: dimmable CFL

["Karam Karam" <kzkaram@xxxxxxxxxxx>]

Can verify the non-linear characteristic in our tests. We got some a
couple of weeks ago and tested on our own dimmers as well as others.
If memory serves correctly I think this is typical (and perhaps
necessary?) behaviour when dimming flourescents but someone feel free
to correct me. The quoted range on the box is 2-100% but this is
called 'brightness' so I guess if we want to be pedantic then we need
to do some lux level measurements.

Another thing we noticed is that they did not always react too well
to a sudden change in dim level (by that I mean a single mains cycle
jump), but since most dimmers tend to fade between levels it will
likely not be a problem in practice.

Interestingly, and not something that I can say I consciously noted
before, several 3rd party inline dimmers we tried had an inherent
cutoff themselves ie. did not allow dimming below a certain level
even with incandescents - so prabably well suited anyway :-)

In summary (based on our tests), if you're looking for that smooth
fading experience from/to 0% then maybe not so good, but if looking
for an energy efficient bulb which allows some level of scene control
then probably ok.

Karam
IDRATEK LTD

--- In ukha_d@xxxxxxx, Chris Hunter <cjhunter@...> wrote:
>
> 'strabge - were they Varilights ... ISTR they went down to
1% ... ???
>
> Chris
>
>
> On 24 Oct 2007, at 16:53, Bill Taylor wrote:
>
> > Got 3 from TLC a couple of weeks ago. They do dim over a
reasonable
> > range with standard dimmers, I've tried a Z-wave dimmer and a
Byron
> > dimmer.
> >
> > The biggest fault is that they don't dim to nothing. I.e. they
get to
> > the bottom of their dimming range, which is still a reasonably
high
> > output and then go off. Likewise they won't fade up gently from
zero,
> > they come on after a delay at a moderate brightness.
> >
> > Bill
> >
> > --- In ukha_d@xxxxxxx, "wywywywywywywywywywy"
<wywywywy@>
> > wrote:
> >>
> >> Hi,
> >>
> >> Has anyone got one yet?
> >> Still eagerly waiting to hear first hand experiences :D
> >>
> >> Thanks,
> >> Wayne
> >>
> >>
> >>
> >> --- In ukha_d@xxxxxxx, "jamie_whitehorn"
<jamie@> wrote:
> >>>
> >>>
> >>> These lights are made by Varilight and
>