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  1. #31
    Join Date
    Jul 2006
    Location
    Gelorup, West Aust.
    Age
    61
    Posts
    0

    Default

    An electrian gave me some surplus to requirement fluros and made the point of saying don't put it above the lathe due to the strobing mentioned - I remember making the comment that the noise is a bit of a give away that the lathe is on!!! I did put it above the lathe (I'm bad) and have had no trouble and never seen evidence of strobing!

    JD
    "No point getting older if you don't get smarter"

  2. #32
    Join Date
    Jun 2010
    Location
    Darwin
    Age
    81
    Posts
    9

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    Quote Originally Posted by Jim Carroll View Post
    All my lighting is fluros with a couple of spot lights for direct lighting.


    I think and I may be wrong but the strobing may have been caused in the early days of the fluro lights when the efficiency of the ballast and starter were not so good.
    Quote Originally Posted by Jim Carroll View Post


    With the progress in this area the efficiency of the light is such that it does not really occur any more



    G’day,
    As an electrician we wore taught never to put florescent or high discharge lighting over rotating machinery except for general lighting and to use incandescent as the work light due to the 50 cycle strobing effect, however that was about 50 years ago and lighting has made quite a few advancers since then, so as a backup I have just consulted with a Lighting Engineer of good standing and a long time friend who confirms my thoughts that modern florescent with electronic ballasts are no longer a problem (so Jim is correct but old stories never die), however high discharge lamps could still be detrimental. I have fluorescent general lighting plus 3x150W incandescent spots (hot, hot) but I am about to change the spots to the latest technology because of the heat generated If they strobe I can use them elsewhere but shuld be OK. I will let you know how they go.
    Cheers, Les.

  3. #33
    Join Date
    Sep 2002
    Location
    Minbun, FNQ, Australia
    Age
    66
    Posts
    1

    Default

    Philips have a 'look-a-like' replacement for the 150W bulbs used in the porta flood lamps.
    They are a 23W low energy sealed in a good solid glass housing.
    They are available in Cool Daylight & Warm White.
    The Warm White ones look very much like the old 150W floods (Some people call the spots but there are a very wide spot.)
    Cliff.
    If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.

  4. #34
    Join Date
    Jun 2004
    Location
    Mareeba Far Nth Qld
    Age
    84
    Posts
    0

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    Tried again tonight for an hour, could not get the job to "stand still"
    Jim
    Sometimes in the daily challenges that life gives us, we miss what is really important...

  5. #35
    Join Date
    Aug 2005
    Location
    Cranbourne West
    Age
    72
    Posts
    0

    Default

    As an apprentice fitter and turner at GM Fishermans Bend I once asked the toolrrom foreman why there were two different types of lights placed next to each other throughout the toolroom and machine shop. I was told that they operated on two differend frequencies and because of that the "cartwheel" effect was cancelled as no matter what RPM a tool/lathe chuck etc. was running the different frequencies of the lights cancelled each other out. I can onlt say that I have seen the "cartwheel" effect in many machine shops, but I don't ever remember seing it during my 15 years at GM.
    To grow old is inevitable.... To grow up is optional

    Confidence, the feeling you have before you fully understand the situation.

    What could possibly go wrong.

  6. #36
    Join Date
    Oct 2009
    Location
    Childress, Texas, United States
    Age
    84
    Posts
    0

    Default

    Yeah.... I'm one of the older types... I have quite a few older fluoro lights throughout my shop (not enough, either) and I also have a few newer ones, and some incandescent lights to really see with. I have seen the strobing effect a few times; the cartwheeling type... and if I remember right that is because I didn't have the little incandescent spots on at the time. It don't matter to me, though, either way... I'm still stupid enough to stick my hand in the way and get the knuckles knocked by a spinning handle or something... ::eek:

  7. #37
    Join Date
    Oct 2003
    Location
    Kentucky NSW near Tamworth, Australia
    Age
    86
    Posts
    1,067

    Default

    I have posted this before on an earlier thread on strobing effect. When I was in the army with the Royal Australian Electrical & Mechanical Engineers unit a Technical Bulletin was posted on strobing and the bulletin stated that Single florescents should not be used in workshops around spinning machinery because they would cause strobing.

    The bulletin stated that double floros should be used because they would cancel the strobing effect.

    Now I don't know if this is fact or not but please read my disclaimer at the bottom of my post.

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