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Compact Fluorescent Flashing.

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My friend still has a collection of compact fluorescent lamps. He has a coiled glass style one in his outside light fitting. It is time switch controlled. It was working well until.....wait for it.............wait for it. Today as it was getting dark and before it had switched on, it was gently strobing dimly. It was regularly lighting dimly and then turning off etc. I suppose the frequency was about 3 Hertz.


Has this strobing anything to do with me connecting up his main earth terminal to the official previously unused U.K.P.N. P.M.E. earth terminal? (All main bonding is in place).


Or, did I just not notice this strange strobing before?


Z.
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    All of the above can occur as mercury vapour lamps reach the end of their life, just before failing totally. I not sure, but I seem to remember it has something to do with the mercury vapour concentration gradually reducing due to it condensing into tiny droplets. You sometimes see these in failed lamps. I'm not sure why it condenses though....


    regards
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  • 0
    All of the above can occur as mercury vapour lamps reach the end of their life, just before failing totally. I not sure, but I seem to remember it has something to do with the mercury vapour concentration gradually reducing due to it condensing into tiny droplets. You sometimes see these in failed lamps. I'm not sure why it condenses though....


    regards
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