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Solving high pitch noise from dimmer.

Discussion in 'Electronic Basics' started by Sam Nickaby, Feb 14, 2006.

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  1. Sam Nickaby

    Sam Nickaby Guest

    I'd been having a hard time sleeping because the dimmer I use on a
    lamp for a night light whistles or makes a very high pitch, continuous
    noise like a Cicada. I then move the dimmer to another location but
    the sound is still there. When I face the wall during sleep the sound gets
    louder. I have tinnitus so it's very hard to distinguish the two sounds
    until I sleep with ear muffs. I will get rid of this problem but I haven't
    found a solution since I lack sleep and not in my right mind. What are
    some repair solution or products I can use to dim night lights?

    Thanks
     
  2. Mr Fixit

    Mr Fixit Guest

    plug in night lights???
     
  3. James Sweet

    James Sweet Guest

    Don't they all plug in?
     
  4. James Sweet

    James Sweet Guest


    About the only thing I can think of that would whistle is the filter
    inductor inside. You might be able to coat it in varnish to keep it from
    vibrating.
     
  5. Rich Grise

    Rich Grise Guest

    Buy a night light that doesn't need a dimmer.

    Good Luck!
    Rich
     
  6. Ken Weitzel

    Ken Weitzel Guest

    Hi...

    Or just put a 1 or two amp rectifier in series with the bulb.

    Used to be able to buy small rotary switches that were easily
    spliced into a lampcord that provided off, low or high positions.

    Ken
     
  7. JANA

    JANA Guest

    Try another make of dimmer. Sometimes, some models may make some noise from
    their switching effect. The lamp can sometimes also produce noise.

    The other solution is to get one of these small plug-in night lamps. They
    are dim, and don't require any wall dimmer for them.

    --

    JANA
    _____


    I'd been having a hard time sleeping because the dimmer I use on a
    lamp for a night light whistles or makes a very high pitch, continuous
    noise like a Cicada. I then move the dimmer to another location but
    the sound is still there. When I face the wall during sleep the sound gets
    louder. I have tinnitus so it's very hard to distinguish the two sounds
    until I sleep with ear muffs. I will get rid of this problem but I haven't
    found a solution since I lack sleep and not in my right mind. What are
    some repair solution or products I can use to dim night lights?

    Thanks
     
  8. Hans

    Hans Guest

    Hi, I had the same problem with my lamp in the living room. This lamp
    has the dimmer built into the cable and the switch/dial was remote. I
    just wraped the dimmer into some old thick cloth, which perfectly
    absorbed the noise. If you do the same trick, make sure the dimmer does
    not get too hot, to prevent fire.
     
  9. Chris

    Chris Guest

    Hi, Sam. Sorry about the tinnitus. If you view in in terms of
    productive capacity lost, tinnitus is one of the most costly diseases
    to the American economy (over a million Americans have it badly enough
    to be at least partially disabled, and most of those are adults who
    could otherwise lead productive lives), and a lot more research could
    be done to work towards a cure.

    The high frequency sound is almost certainly coming from the bulb
    itself rather than the dimmer. The filament and filament mount on many
    bulbs are mechanically resonant at a multiple of line frequency.

    The easiest thing to try is getting a different (usually a more
    expensive) brand of light bulb. More expensive ones are typically
    better-made, and seem to be more resistant to this effect. You can
    also slow down the turn-on of the triac in the middle of the AC cycle,
    to mimimize or stop this effect. In days of yore, triacs all had soft
    turn-ons, and this was less of a problem. Since you can't change the
    triac, you can also accomplish this by putting a small choke in series
    with the line. Lutron makes these, but I'm not sure you want to play
    with the electrical wiring. Either that, or get a different dimmer
    that has that protection built-in (quite a bit more expensive).

    To get a little more sleep at night, you might want to try one of those
    "white noise generators" that make sounds like rain or waves. They're
    sold separately as stand alone desktop models, and are also built into
    some better alarm clocks. A friend of mine found that helped him for
    some time. Try to get one that has an external connection for speakers
    or headphones. That will give you more options.

    If you're trying to find and isolate high-frequency sounds that are
    bugging you in order to minimize their effect on your life, you might
    want to buy, beg or borrow an old medical stethoscope, or use an
    automotive one (that has the horn funnel at the end).

    Good luck, and let's keep hoping for a cure! Anyone who's interested
    in more information can check out:

    http://www.ata.org/

    Chris
     
  10. Art

    Art Guest

    Good Info Chris: Been enduring the ringing -both ears - for longer that I
    can remember, plus the hypertussis thing which aggravates hearing one
    specific person when in a group, or in lots of ambient noises.<
     
  11. spudnuty

    spudnuty Guest

    I do relaxation and massage therapy and have had many clients with
    sleep issues. Lack of sleep or inadequate sleep can be a major factor
    in many physical problems. I had a client with tinnitus that went away
    after she had a few weeks of good sleep. Have you tried sleeping
    without a light? Not meaning to be trivial about this but there have
    been studies that show melatonin levels are lower in people who sleep
    with a light on. There may also be some underlying issues there. I
    personally cannot sleep with a light on and I have a tiny keyboard
    light because my desk lamp bothers my wife when I'm working late at
    night.
    As to the noise I think that the other posters have covered that quite
    well.
    Richard
     
  12. Guest

    <snip>

    Variac. Superb fade up/down.
    GG
     
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