Discuss LED Spots in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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Spoon242

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Hey Guys,

I have installed 3 x Mains LED dimmable spots 6W each.

I have used an MK 400W dimmer and when the switch is fully open the LED Spots flicker! Close the dimmer slightly and the flickering stops....

Possible causes please?
 
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matdom

  • Thread Starter Thread Starter
  • #2
A friend of mine had this...turned out to be something to do with that type of dimmer switch he had fitted....Phase angle rotation seems to ring a bell.....???
 
T

Tidy Max

  • Thread Starter Thread Starter
  • #3
Have you tried a different dimmer?

Sent from my GT-I9300 using Tapatalk 2
 
is the dimmer compatible with l.e.d spotlights?

well a quick google gave this
"Low voltage dimmer switch with micro-controller based circuitry. Use with Tungsten GLS lamps and low voltage halogen lamps. Fits 16mm plaster box depth. Includes full instructions. Use good quality wire wound or electronic transformers"
so from that previous paragraph, i would guess not?
this could be the issue?
the flickering could develop to blown l.e.ds later on.
just my 2ps hope it was helpfull.
 
Dimming LEDS is always tricky, I've found the best soloution is to go for something that is designed with a dimmable power supply to supply the LEDS. These tend not to be cheap and generally do not use the standard dimmers.
 
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shocking_eg

  • Thread Starter Thread Starter
  • #6
there is a proper LED dimmer module now available that is made for dimming small loads between 0W and 60W. these work with LED dimmable lamps and Halers fittings fine.
 

Midwest

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Arms
Esteemed
You will need a dimmer designed for the low load of LED lamps as perviously mentioned. Most standard dimmers minimum load is 40w, which as you can see won't work your maximum load of 18w. There out there now dimmers with very low minimum loads of 10w or less. Some dimmers will work with a 'load resistor' placed in parallel with the led lamps, but thats a bit messy in my opinion. Some LED lamps will also require 'trailing edge' dimmers as well. The best bet is to purchase LED fittings and dimmer by the same manufacturer (or dimmers recommended by the manufacturer). Avoid cheap lamps, it's costlier in the end.

I don't think MK currently offer a low wattage dimmer, I asked them about 6months ago. I've used LEDlite dimmers and lamps, their web site is down at the mo' though.
 
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