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Not bike lights kitchen lights!
there are some 240v GU10 dimmerable LEDS.
Ive never seen any 12v MR16 dimmables driven by transformers.
EDIT: i.e. if you didnt buy dimmerable units then no, you wont be able to add a dimmer.
Also you will probably need to get a low minimum power dimmer - you cant use a normal 200w min unit as a bank of LEDs may only come to 50W on the circuit.
it depends entirely on what type of led you buy... Alot of them need dimmable drivers.
Apparently LED's dont 'dim' as such, they oscillate at various frequencies, which gives the impresssion of dimming*
*I think!
dark glasses?
if you're thinking of the GU10 replaceable LED bulbs, they're terrible (or were a few years ago) - very 'white' light, and not very bright
very 'white' light, and not very bright
I've just put in a fairly cheap B&Q mains 3W one and it's the same colour light as a halogen bulb and very bright. Don't think you can dim it though.
Apparently LED's dont 'dim' as such, they oscillate at various frequencies, which gives the impresssion of dimming*
Only if you're considering quantum effects. Otherwise they do indeed dim normally (and very efficiently). Whether the driver dimming them does it by switching them on and off (technically known as PWM) is another matter, but you don't have to do it that way, and better drivers won't.
If you use these, yes.
[url= http://www.ultraleds.co.uk/u10d10ww-dimmable-gu10-wide-angle-warm-white-7w60w-p-2262.html ]http://www.ultraleds.co.uk/u10d10ww-dimmable-gu10-wide-angle-warm-white-7w60w-p-2262.html[/url]
Ive recently done a lot of research into GU10 LEDs for my barn conversion ( I have over 100 of them)
I settled on 4 different models having tested about 20. I built a test rig and bought samples from online shops and eBay as there really is no other way of being sure of whether a lamp is genuinely bright enough, or spotty enough or warm enough for your proposed use.
They range in price from £3.50 to £22.00 each. All but 10 are "warm white", i.e. around 3000k and are a very warm natural colour. They range in power consumption from 1.8W to 7W. The 7W are a whiter 4000k colour but provide a very bright light and are genuine 50W halogen replacements.
Others are single or triple SLEDS or 60x cluster LEDs. I haven not gone for dimmable units but instead "shaped" the light around the open plan areas using the different power bulbs. The effect is excellent and the research well worth it. GU10 LEDs are definitely now a viable alternative to halogen and the lifecycle cost savings are massive. Even if I had every bulb on in our barn at once, total draw would be below 300W but every room is well lit.
100 x 50w GU10's, 5kw of lighting!! flippin eck.
They are just the small light units for some skirting under the units, I am just poncing my kitchen up a bit.The cabling was put in 2 years ago when i installed the kitchen.The light switches are already in and they are dimmer switches and quite costly so do not realy want to change!
Rich
You can get some dimmable GU10 form factor CFLs (made by Megaman).
Whilst they are GU10 socket however, be careful about the lamp depth as the megaman dimmerables are quite tall.
If you have other dimerable (say Halogen) lamps on the circuit so that the minimum load is higher than the dimmer's threshold (say 200w) then that shouldn't be a problem although some of these GU10 dimming ballasts can be a bit picky about mix and match on the same circuit.