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strange russian fluorescent light fitting

Discussion in 'Hobby Electronics' started by KLR, Sep 30, 2003.

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  1. KLR

    KLR Guest

    While I was in Russia last week noticed this strange setup with the
    fluro lights in the hotel we were staying at, and it has me puzzled.

    For some reason there were 2 "ballasts" in the thing, I have thought
    that one of them (left) might be a separate transformer to power the
    filaments (as it has 4 terminals and the other (right) 2 terminals),
    but if that were the case - why would you need a starter in there if
    the filaments are being heated by the filament transformer ??

    For that matter - why would you need a filament transformer in a
    standard 40 watt batten anyway ??

    I have thought of dimming - but why not just switch to a much smaller
    lamp internally instead ?
    I'm sure that even soviet technology had advanced sufficiently to
    develop standard 2 wire ballasts as we have used here for decades.
    Seems a very expensive and inefficient design to me. Anyone got a
    clue on this design idea ?

    Unfortunately the label on the "ballast" was not understandable by me
    as it was not in english, and all the internal wiring in the fitting
    was concealed in plastic sleeving which made it impossible to trace.
    (note - russia uses 220vac mains) For that matter - they appeared to
    use a red wire as an earth and green as one of the supply lines.

    Out of interest there were more bloody lights in that city than I have
    seen in equivalent places here in aus. I would have to give that city
    first prize in wastage of electricity. For example - above the
    platforms in one metro (underground rail) station I was in
    (Kitay-Gorod) - there were dual "U" shaped 40 watt tubes roughly every
    foot along the ceiling - and this went on for well over 150 metres.
    and not just on this platform. ( pic at bottom of this page)


    Also - note the use of a wired remote control on the Goldstar TV.
    Must save changing the batteries all the time. Strange place.
  2. Rod Speed

    Rod Speed Guest

    Looks rather like there are two tubes there, with two fittings
    mounted end to end, with both ballasts in the one with the cover off.
    Rather unlikely and they look suspiciously identical.
    And what would be the point of a filament transformer anyway ?
    That should have been obvious from the switch in that unlikely possibility.
    Like I said, looks rather like there are actually 2 tubes end to end.

    Maybe the fitting has had a single tube mount added to what was
    originally intended to have 2 tubes if there is only that one fitting.
    They're likely just scared of the dark.

    Wouldnt be the first massive bureaucracy that didnt
    give a flying red **** about the waste of electricity etc.
    We had those here at one time, long ago.
    Likely just their technology lagging badly.
  3. Mike Harding

    Mike Harding Guest

    Most of western Europe has much better public lighting
    than in Oz, whether you think that's a good or bad thing
    is another matter.
    Probably a special for hotels to stop people stealing the
    remote controls.

    Mike Harding
  4. KLR

    KLR Guest

    nope - one was definitely 4 terminal - other 2.

    Would be a good explaination though if they were the same ballasts.
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