Fluo-compacts test on "Que Choisir"

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bernardd
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by bernardd » 02/02/11, 12:20

Gaston wrote:
bernardd wrote:From the 230V AC rectified, one must arrive not far from 180V, except error.
It is 230V effective, so 325V amplitude.
Once straightened and filtered, we are more than 320V :!:


I had put "unless I'm mistaken", I felt a pb ;-)

In fact, I forgot that the 230V is the effective voltage, not the max voltage: thank you for your correction.

On the other hand, since it is precisely the "effective voltage": The effective value of a voltage U is the value of the constant DC voltage which would have the same effects as U on a purely resistive dipole.

It is directly the DC voltage that we will have once straightened and filtered.

So for 60 LEDS: 230V / 60 = 3,83V maybe a bit high for LEDs? I do not know about the latest LED lighting ...

So I looked at an example: http://www.vina.co.kr/new_html/eng/prod ... 7&cate2=21

Between 3 and 4V: we are good :-)
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by Christophe » 02/02/11, 12:23

We continue the Hors Subject ... : Lol:
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bernardd
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by bernardd » 02/02/11, 12:31

Christophe wrote:We continue the Hors Subject ... : Lol:


I did not continue, I corrected : Cry:
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by Christophe » 02/02/11, 15:08

Ok.

I just made a few measurements of voltage led side on 2 230V AC bulb models.

Result and continuation here: https://www.econologie.com/forums/mesure-et- ... 10433.html
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by Did67 » 02/02/11, 17:47

Well, it's gone a little in all directions.

Like others, I was interested in LEDs and bought some:

1) A very unfortunate experience with a series of 10 bulbs (imitation, shaped, incandescent bulb) for the lighting of the driveway in front of the house / existing underground circuit so 220 V quasi-mandatory / low intensity welcome light / long duration of use (several hours per evening, even whole nights) ...

A typical situation where the LED is at its element (so I bazardé fluocompactes that were in the post).

Race results: after a little over a year, 9 bulbs on 10 HS; it is the transformer in the ballast that is roasted.

Conclusion: no more "chinoiseries" !!! And undoubtedly that it is better to use 12 V LEDs if you do not want to risk this problem which must be the Achilles heel of LED bulbs.

2) LED 12 V on an old transformer, on dimmer: it works without any problem for over a year (I pass quickly with
the dimmer to stop halfway once the LEDs are on; the rise of tension never seems to have been a problem)

3) LEDs how is it already SMT ??? I was stuck by the light power, the opening of the beam. Indeed, it starts to be serious. Equivalent, at ease, to a halogen spot 20 W. Bluffing. For only a few months
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by I Citro » 03/02/11, 08:27

: Arrow: I reassembled a ceiling fan with an "old" Megaman "gel" bulb (non-Ingénium model) in my daughter's room which is also lit by a luminaire with 3 230V LED "spots".
In terms of light output, LED spots are better. : Shock:
As in addition, the compact fluorescent has a lighting time ttrrrèèèèèès long, it became so painful that Madame suggested to throw the compact fluorescent bulb ... : Shock:

This finding comforts me in my desire to no longer buy compact fluorescents (as much as possible), but I still encounter difficulties in finding 230V LEDs that can be used in "flat" luminaires with globe or frosted lenses "and which are traditionally equipped with 'E14 bulbs mounted "flat" ... :?
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by Christophe » 03/02/11, 09:46

Megaman Gel? Kézako? What power?

Otherwise, the loss of brightness over time is a criterion that is rarely taken into account when buying (except in tests like the above).

The ingenium is given to keep 80% of the initial brightness after 10 000h ...
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