Looking in B&Q I notice that the mains halogen lights say "dimmable" on the
box, whereas the ones using a transformer don't. Can I assume that dimming
is not possible with the lights that use a transformer.
Sorry if it's a daft question.
No, you can dim low-voltage halogens, but you need either an
`electronic' transformer, or a great big beefy dimmer.
I have the cheaper B&Q dimmers (which are marked specifically *not* for
low voltage lighting) working just fine with Ring and Skot electronic
Its a weird question.
Ther are LV systems that are 'dimmable' and there are dimmers that are
made for LV systems...and I have never had a clear snwer as to what
works with what.
I went the 'buy transformers that say dimmable' on them and use standard
dimmers. Works OK so far. So I had electronic transformers...
..whereas I believe uou can get dimmers to drive toroids as well, but
they are tweaked to handle the odd load.
SOME electronic transformers do NOT behave well under dimming. Usually
the cheapest nastiest that money can be wasted on.
In fact, exactly what you would expect B & Q to stock...
Go to a decent electrical supplier.
Its a bloody DIFFICULT question to which no one has the complete answer.
I found ONE answer that worked for me. Newey and Eyre 'dimmable'
electronic transformer in one case, and a 'dimmable' electronic
transformer track system wired in parallel with it.
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