On 07/11/2020 23:11, Peter Johnson wrote:
On Fri, 06 Nov 2020 18:23:09 +0000, Scott
wrote:

I have a couple of early LED lamps, with fins and very heavy. Are
these as good as (or better than?) the present generation?

I find leds acquired in the last couple of years to be to be
considerably more reliable (none have failed) and brighter at lower
wattage than their predecessors.


In my experience with the early type it was often the electronics in the
base of the bulb that failed, probably because it got too hot in
traditional light fittings - especially in downlighters with a limited
free air flow and very little facility for heat sinking.

With more efficient LEDs and with the use of LED arrays dropping 70+V
rather than single LEDs the electronic components are less stressed and
hence more reliable.

As I'm going through my house re-decorating each room I'm replacing old
light fittings with LED panel type (fancy "designer" type rather than
utilitarian). These all have fairly large metal back plates to which a
LED strip and the driver are attached giving a more than adequate heatsink.

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