RE: Dimming Low Voltage lights

[Robert Chasmer <robert.chasmer@xxxxxxx>]

Hawes,Timothy Edward (GEG) [mailto:haweste@xxxxxxx] wrote:
> Those switches are only suitable for dimming "dimmable"
> transformers - quoting: "Designed to control dimmable low
> voltage lighting transformers"  :-)
>
> The transformer will say something like "electronic" or
> "dimmable" on it.

Ok I've just had a look at the transformer that came in the box and it does
indeed say "electronic".  I've got two of these transformers,
each one is
like a long box of cooks matches, and four halegon lights.

The full description (incase it means something to someone):-

DOMUS Line srl                 SET-70F (20-70VA)
ELECTRONIC TRANSFORMER FOR LV-HALOGEN LAMPS
PRI.:230V~50HZ 0.30A Cos = 0.99
SEC.:11.6V~eff Max. 5.8A 20-70W
Ta:max. 50'C Tc:max. 75'C at 70W
SELV EQUIVALENT etc..


> The safest way maybe to just replace the transformer with one you
> *know* to be dimmable e.g. the Varilight transformers from B&Q,
> TLC etc. B&Q have them in-store, but not on the website yet.
> They're available in 6.5 A & 9.5 A ratings (on the LV side) and
> two transformers side by side are about as big as a box of Cook's
> matches.

Well I'm happy to have a look in B+Q but I'd take back the trasnformers and
lights  I got from MFI, theres no point in me paying for the lights twice.

Would you try these transformers out on a dimmer switch?
Also on the end of the transformer is a socket which looks like it will
take
6 lights, should I use both transformers or is it ok to use just the one.

Thanks in advance


Rob

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> HTH,
>
> Tim H.
>
> -----Original Message-----
> From: Robert Chasmer
>
> Paul [mailto:groups@xxxxxxx]
wrote:
> > You'll need to get a special kind of dimmer that can cope
> > with this kind of load - don't use a standard dimmer!
>
> http://www.diy.com/bq/product/product.jhtml?PRODID=15508
> http://www.diy.com/bq/product/product.jhtml?PRODID=15509
>
> So is this the sort of thing you meant.  How will I know if
> the transformer
> is happy for its mains input to be dimmed, do I just suck it an see?
>
>
> Rob
>
> +
>
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