mr11

  1. D

    Replacing a big toroidal transformer on spotlights

    We've been running three of the below Philips GU5.3 5W 76954500 spotlights in our ceiling for the past 5 years: https://www.amazon.co.uk/gp/product/B00KTUZCB8/ They replaced 50W 12V halogen spotlights, each with their own transformer. We kept the existing 20+ year old toroidal transformers in...
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    • Thread
    • constant current constant voltage gu5.3 led mr11 spotlights
    • Replies: 6
    • Forum: Electrics UK
  2. S

    Wanting to change MR11 and transformers to standard UK mains voltage 240V & use dimmable LED bulbs.

    I have a couple of dozen 20 Watt MR11 bulbs on a dimmable switch in a room which I'd dearly love to change to 240 AC mains voltage as the transformers often go and it's a pain changing them. Is there any type of bulb which would fit the existing bulb holder (MR11 size) and which would mean I...
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