| Adam Aglionby 2006-07-22, 5:25 pm |
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Warax wrote:
> On 21 Jul 2006, christian<christian.yan@gmail.com> wrote:
>
> sci.engr.lighting may have the answer.
> There are some very good lighting specialists there.
Added sci.engr.electrical.compliance, from sci.engr.lighting
Going to guess that there may be raised eyebrows at validity of the
CE/GS sticky lables.
LED sets that familiar with usually use standard 5mm epoxy encased LEDS
rated at your nominal 20mA. U.S. style ForeverBright with an
over-moulded shape and run as one long series string on 120V. Most UK,
240V, LED Christmas lights tend to be either battery operated or from a
wall wart 24V DC supply. Some LED products wired in series strings with
resistor in series, physically large resistor....
Unless the LEDs used are very high power, 1W+, guessing heat isnt
coming from LED. 5mm LEDs can generate enough heat to distintegrate
themselves in extreme cases non passively,not a big bang, but still
some shrapnel To heat the plastic casing sounds more like an
inadequately rated resistor for the task.
Perhaps the OP could explain the sypmtoms in more detail?
Adam
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