Low Conso Bulbs and Led Bulbs

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quatrecouleurs
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Registration: 20/12/09, 02:18




by quatrecouleurs » 20/12/09, 20:26

Good evening everyone !

So I use a lot of leds in flashlights, see the forums English candlepowerforums ... There are much more powerful LEDs in production except that they are not all public ...

I will cite the Ostar 6-core osram led (1000 lumen); the 4-core Seoul semiconductor P7 LED (700 lumens); the cree mc-e 4 cores also ... Which are new generation leds which have nothing to do with the "diode showers" sold in europe ... It remains to check the consumption in watts and find capable transformers to take out the high amperage needed to operate them.

Personally, I have a montage waiting to recover an old transformer and as soon as I do the editing I will put a post here.

For those who want an immediate LED mount, there is a brand new Seoul Semiconductors technology, the Acriche, which works directly on 110 or 220 volts (but a little less efficient) !!!

There are already companies that offer powerleds luminaires, some totally autonomous with built-in lithium batteries and photovoltaic panels.

Wishing you good research (including ebay or dealextreme (offers empty transformer bulbs for mounting leds ...)
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bernardd
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by bernardd » 20/12/09, 21:33

Hi,

oiseautempete wrote:You like to cut the hair in 4 it looks like ... missed because neon is a misnomer because there is no neon in the standard tubes (the color of a real neon tube is red orange) ... j I wrote LCD tubes to make the distinction, without more ...


Thank you for reminding me, I am here to learn: not missed, on the contrary.

I was just trying to get back to a more usual vocabulary, but the word fluo fits me well. As I have never heard of LCD tube and you said they did not twinkle, I thought you confused the backlight fluo LCDs themselves. In fact, I have experience that few people know that LCDs do not emit light, but have a backlight.

Sorry for the confusion, I should not have assumed :-)

oiseautempete wrote:You must not be familiar with the fluorescent tubes: in my box were ramps over fluorescent tubes and linear 1200m I assure you that these tubes running h24 / 365j per year are phenomenal reliability (time life 5 years and more) and excellent performance ...


Normal, since I said elsewhere that it is the ignition / extinction cycles that kill the fluos, and in addition that consume much more. 24 / 7 continuous lighting is their best application.

On the other hand, in a building hall with presence detection, LED recommended ...

And while the high-voltage power supplies of workshop fluos have room and air, this is not the case at all in LCD TVs, even more so for laptops, and neither is the case in Fluorescent bulbs, hence the reliability issues. As for the LEDS, the problem comes from the electronic part, increased in the case of the fluo by the need for high voltage and starting capacity.

oiseautempete wrote:The famous flickering of the tubes is imperceptible when there are several ...


It is especially that for fluorescent workshop, the flicker is 100Hz and one is not aware of it. But as the 50Hz is synchronized, it does not normally compensate between several tubes, except to use the three-phase phase shift. If an electrician has the info ...

I wonder if there are no risks with rotating machines elsewhere, due to the stroboscopic effect ... But the remanence of the tube is perhaps sufficient? I do not know.
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Grelinette
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by Grelinette » 21/12/09, 11:31

Hello everybody

I see that this topic is challenging and that things are neither simple nor accurate in comparing these 2 types of lighting.

As there are a lot of lamps to change in the building I will do tests by room ( http://educ-envir.org/~loubatas/ ) before changing everything at once.

On the other hand, being a fully autonomous ecogeote, the consumption side is also important (especially since in principle the rooms have been designed to take maximum brightness and natural heat, the quality of lighting is so secondary, except at night of course).
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bernardd
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by bernardd » 21/12/09, 12:28

Grelinette wrote:As there are a lot of lamps to change in the building I will do tests by room ( http://educ-envir.org/~loubatas/ ) before changing everything at once.


Anyway a good strategy :-)

Grelinette wrote:On the other hand, being a fully autonomous ecogeote, the consumption side is also important (especially since in principle the rooms have been designed to take maximum brightness and natural heat, the quality of lighting is so secondary, except at night of course).


For a global vision, having an electrical circuit dedicated to lighting (I mean without mixing with the outlets) that is directly in 12V for LED lighting could be a source of economy. But as it is not standard, it requires a little thought.

Advantage:
- can be supplied with photovoltaic panels and batteries directly, avoiding the need for a ripple stage with its losses;
- LED bulbs without conversion 230VAC to low voltage, so less electronics, less loss, and better reliability;
- less radiation 50Hz ...
- and no risk of electrocution on this side (however may lose the habit of electrical danger ...).

Disadvantages:
- it is necessary to limit the current intensities on each departure, but not too hard with LEDs :-);
- new so focus to do;
- changes the habits ...
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Grelinette
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by Grelinette » 24/12/09, 10:18

It's interesting all your remarks. Thank you.

I realize that decisions concerning eco (no) logy are never so simple because we have a rather subjective interpretation of the information we are given daily on this subject.

The most difficult thing is to make the difference when the information comes from professionals who will of course guarantee that their products are the best on the market!

Yesterday morning (Wednesday) I was listening on France Inter a program on the new modes of heating ecological and economic (thus econological! You can find this emission in Podcast).

In short, there are so many parameters to take into account (from the financial to the ecological, through the ease of supply or social backlash on the other side of the globe, not to mention the personal testimonies that often come to reverse a received idea) that it is not so simple to choose. It seems nevertheless that for the heating granule is the solution currently the most economical ... (but I am wary of the solutions presented as ideal, revolutionary and flawless!).

To return to the choice LED / LOW VOLTAGE is best to test and gradually change the lamps.
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