LED bulbs: tests and tests, pay attention to the results!

[Christophe]

Absolutely not agree at all!
All conso savings are good to take, ALL!

Yes I did not want to react to get into a controversy but I can not agree more with you Bucheron ... especially that few people can afford to equip themselves with renewable energy ... for cost reasons of course but also convenience (tenants, apparements ...) starting with 95% of Parisians ...

By cons nothing prevents the majority of French to choose to use compact fluorescent rather than conventional bulbs ... in my opinion there is 1 2 nuclear reactor that turn to heat tungsten for individuals ...

Well, the approximate calculation is quick ...

"Approximate" calculation on 1 day:

Let's say 4h lighting per day on average and per household 3 60W bulbs 180W 4h 0.72h and therefore 15 kwh per day, for 2,7 Millions of French home, it is a power of 10,8 GW and 650 Million energy kWh (and 000 XNUMX € per day for EdF just on lighting) ...

So finally we need at least 2 1.3 GW nuclear reactor at full power just for lighting ...

Who said that we had to focus on BIG savings?

If error in reasoning tell me

[delnoram]

Small streams make big rivers.

1 small led spot placed in the right place me to turn off for not much 1 tube 36w (which I did not check if he did them).
Result: estimate 45kw economy per year.
(4h x (36w-1.5w) x 365.25 days x 0.9) the last is 10% because it is lit from time to time.

[Christophe]

36W the tube ?? You're in a LOFT? The most powerful I have 20 W (equivalent 100W) ...

[delnoram]

Not a fluocompact, 1 tube 1.2m it was my DIY workshop
you need to see the hammer that's scraping your fingers ........ now it's a reserve with the frozen.
less need for light except when cleaning the freezer.

passon to the serious things.
test in black box, led in front of the luxmetre (obliged otherwise it would have required a black box outside and white inside)
remote sensor led 150mm.

test on 6 leds "identical" + a disassembly of a spot 20leds.

under 2.95volt
15.0mA 400lux__14.6mA 400lux__16.6mA 480lux__16.5mA 470lux
15.9mA 440lux__14.1mA 410lux__ __05.7mA 84lux

3.2volt
37.6mA 900lux__34.6mA 800lux__42.mA 1100lux__42.0mA 950lux
41.5mA 860lux__37.5mA 900lux__ __15.4mA 214ux

under 3.5volt (first and last only)
80mA 1400lux 41mA 482lux

here are some conclusions

[Christophe]

Uh great for the tests

But could you also provide the references of the tested equipment (led) and test (multimeter) as well as some photo to illustrate (a diagram of the black box for example)?

I will analyze your measurements.

Thank you

[Capt_Maloche]

yeah, the higher the amperage, the more heat loss, normal

44mW to 2,95V and 15mA gives approx. 400lux
111mW to 3.2V and 34,6mA gives approx. 800lux 2 times 1 / 2 of P absorbed for 2 times more Lux.

The idea would be, for moving lamps, a normal interlock stuck to 3V with a zener diode and in parallel a push "boost" to double the lighting temporarily to 3,2 or more.

I'm still waiting for my order, and I'll tell you that on receipt

Pascal

[Christophe]

I just measured the consumption of my LED bulbs and Fluocompactes with my PM230.

The results are ACCABLANTS FOR LED BULBS (Brand Rishang Electronics so 100% Chinese as 99% of bulbs LED market) rather see:


1) Rishang Electronics Globe 60 Leds in E27 bought 22,90 €

Conso: 16,45 W! Let 0,274W by LEDS !! The seller was giving this bulb for 5,5 W!

2) Rishang Electronics Spot 12 Leds in E27 bought 5,90 €!

Conso: 7,1 W !! Let 0,592W by LEDS !! The seller gave this bulb for 4,4 W !!!

3) Rishang Electronics Spot 32 Led in PAR20 (there is more than 11 functional after 10h of operation!) Bought 14,90 €

Conso: 11,85 W !! Let 1,077W by LEDS !! The seller gave this bulb for 3.96W !!

4) Rishang Electronics Spot 21 Leds in E14 bought 7,90 €

Conso: 7,14 W! Let 0,34W by LEDS! The seller gave this bulb for 3.96W !!

I prepare a complete file on measurements made with photo support. I will complete it later with brightness measurements!

Where do these overconsumption come from? Surely integrated transformers of poor quality (which explains the strong heating of the caps) or bad LEDs?

If anyone could confirm or deny my measurements ...

In the meantime my conclusion is unanimous:

Flee the LEDS (at least Chinese) or so check their conso before believing in the savings you'll make because they do not exist quite the contrary for the same brightness Fluocompactes are much more powerful (file being created) !!

In any case perso I was well done ... and I will at least ask for the refund of the PAR20 ... but hey it was for science huh

[delnoram]

Here is the CHEF gear

[Christophe]

Super, with my measurements in parrallele (a little less scientific than yours ... I have "lab") we will be able to make a great concrete folder on LED and Fluo lamps.

By cons we do not understand the black box ... What is the spot 15 Leds on the top ??

What do you think of my measurements of LED bulbs? Could you confirm my results (shit!)?

[delnoram]

not anything to do with the black box, it is the spot 15 white leds 12v AC that I resented to put one of his leds in the test.
The result shows that the difference is still important, although the very first one I bought was worse and more expensive.