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[Solved] Flickering of LED bulbs using a 2.2 uF capacitor in switches without neutral

ra_dzik 1692 5
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  • #1 21010164
    ra_dzik
    Level 7  

    Hi colleagues (and friends of course)!

    I suspect that also most of you have a lighting installation without a neutral cable. In that case, capacitors are used with all those "smart" switches.

    In my set, there were such as in the photo:
    X2 2.2 uF 275VAC capacitor with black wires on a dark background.


    Here just 2.2 uF. But I don't know if it's a matter of capacitance or the quality of these capacitors, or maybe the low wattage of the led bulbs, but unfortunately you can see that they gently flicker when switched on.

    Do you have any ideas about this? Any advice

    I would appreciate a reply from experienced colleagues (or colleagues of course :-) ).
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  • #2 21010185
    freebsd
    Level 42  
    ra_dzik wrote:
    Do you have any ideas on this? Any advice?
    Connect two such in parallel, or use a larger one.
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  • Helpful post
    #3 21010198
    klamocik
    Level 36  
    Just no more or the LEDs will start to light up permanently, first 1 micro or even less to keep things going.
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  • #4 21010255
    ra_dzik
    Level 7  

    It's @freebsd who writes to parallel, i.e. increase the capacitance, and @klamocik who writes to give a smaller 1uF, well I've turned a corner. Should these be smaller or bigger?

    And can I use another type instead of polypropylene ones, so that the dimensions of these capacitors are smaller?
    .
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  • #5 21010416
    klamocik
    Level 36  
    Dimensionally smaller you won't find it, and whether the capacity is larger or smaller is your judge. But to be sure, swap one led for a regular incandescent and you'll rule out low wattage.
  • #6 21053643
    ra_dzik
    Level 7  

    I changed the capacitors and also inserted higher wattage led bulbs
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