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Higher than normal Efficiency LED lamps

mapj1
This is  big Clive  dismantling  some LED lamps made by Philips, but solely for use in Dubai.

It seems that by using all the good techniques of redundant design, a custom long life, cool running, higher than normal lumens per watt LED lamp has been created.

I personally think Philips own video  is vastly less informative.

I was very interested to hear about these, as here in the UK and I presume the EU we are often assured that be are being sold the most state of the art efficient thing, and really it rather seems we are not.

If you bear with the full 30 odd minutes, (or skip the bit where he is mangling the lamp base with side cutters) you get to  see the internal circuit which includes a rather nice anti-flicker circuit that keeps the LED current constant for changes of a few volts in the mains voltage.

I thought folk here might also be interested to know how they work and indeed that such things exist. Even though we are not allowed to have them of course.

Mike
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    Denis McMahon:

    ... Whereas on the UK package shown alongside, the equivalent tungsten lamp wattage is shown in much larger type than the actual wattage or lumen output.


    This is a practice that I deprecate. By all means state equivalents, but not as the main point of description. To compare the performance of lamps of different types we need to note the lumen output, and this is the figure that should have prominence. Where will we be in ten years' time? Will it still then be appropriate to describe the performance of a lamp in terms of what will by then be a museum piece? Fortunately other manufacturers, notably GE, display this information more sensibly.


    Yes, but consider for a moment the The Road Vehicles Lighting Regulations 1989. A vehicle first used before 1 April 1986 must have headlights with a minimum power of 30 W (dipped and main beams). That presents a problem with LED lamps and since 1 Jan this year, LED conversions are an MOT fail. There is no specific requirement concerning intensity. By the way, Vintage, i.e. pre-1931 cars are not included because they never had to have headlamps.


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  • 0
    Denis McMahon:

    ... Whereas on the UK package shown alongside, the equivalent tungsten lamp wattage is shown in much larger type than the actual wattage or lumen output.


    This is a practice that I deprecate. By all means state equivalents, but not as the main point of description. To compare the performance of lamps of different types we need to note the lumen output, and this is the figure that should have prominence. Where will we be in ten years' time? Will it still then be appropriate to describe the performance of a lamp in terms of what will by then be a museum piece? Fortunately other manufacturers, notably GE, display this information more sensibly.


    Yes, but consider for a moment the The Road Vehicles Lighting Regulations 1989. A vehicle first used before 1 April 1986 must have headlights with a minimum power of 30 W (dipped and main beams). That presents a problem with LED lamps and since 1 Jan this year, LED conversions are an MOT fail. There is no specific requirement concerning intensity. By the way, Vintage, i.e. pre-1931 cars are not included because they never had to have headlamps.


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