QLD-001 any suggestion for working dimmable LED GU10 bulbs?

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  • marcuslee
    Automated Home Ninja
    • Dec 2009
    • 275
    #1

    QLD-001 any suggestion for working dimmable LED GU10 bulbs?

    Hi All,

    Anyone recently implemented a QLD-001 with a working GU10 LED bulb? I have used two models of Philips MasterLED bulbs in the past (with Karam's help to send new power mapping curves), but they're long discontinued. And starting a new project, but have so far tried 2x from the current range of Philips LED bulb range without success.

    (Choppy dimming and/or sometimes one bulb in the circuit stays on very low).

    Grateful for any known working solutions, as want to implement the build without going back to normal GU10 bulbs (or possibly not using Idratek at all / purchasing new QLD-003 could be price prohibitive on this new project).

    Thanks in advance,

    Marcus
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  • marcuslee
    Automated Home Ninja
    • Dec 2009
    • 275
    #2
    Thanks for reply to my email Karam, just going to post it here for others, hope that's ok:

    Unfortunately its one of those annoying things with LED lamps i.e the variability of their characteristics even from the same brand. It is true that the QLD-003 is a bit better at these since it doesn't need the capacitive filter (sometime the cause of non switch off if you are just using one lamp say) and also the trailing edge method seems to suit more LED types. That being said there are widely varying dimming curve characteristics even with the QLD-003 (and SLD and MSD).

    What usually helps quite a bit is to have more than one lamp in a particular circuit. So in the case of GU10 type configurations most times there are multiple lamps on one circuit and the characteristics are much better than what you'd see with just one lamp. So if you are testing with just one lamp but actually will be using 4 or more in practice then the test with 1 is not representative.

    As for which lamps, to be honest I'm a bit out of touch myself as a while since I last had to look around for lamps, so chances are that these are no longer in circulation either (as I can already see). However at the time I generally didn't find too severe problems (other than varying curves and starting points) but then I don't think I encountered any circuits with less than 4 GU10s. I think megaman types tended to be good but relatively expensive. I had some Integral ones more recently which were ok on a QLD-003 but terrible curve on QLD-001 (so doesn't help you but just illustration...)

    Also just realised Gumy posted a stick on this, so will update my findings there (seeing as I've now ordered another 2x sets of lamps to test).

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