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Re: Quid des ampoules LED retro ?
Le Mon, 10 Apr 2017 11:11:57 +0200,


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    http://grincheux.de-charybde-en-scylla.fr/?p52%4&more=1&c=1&tb=1&pb=1

    JKB

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Re: Quid des ampoules LED retro ?
On 12/04/17 18:33, JKB wrote:


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L'auto-citation, c'est limite.









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Re: Quid des ampoules LED retro ?
Le Sun, 16 Apr 2017 19:12:55 +0200,

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    de raconter n'importe quoi sur les ampoules ou les imprimantes est




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    le foutage de gueule comme cette histoire de vernis (mais ce n'est
    pas la seule) et les contingences techniques (comme l'histoire des


    longtemps, tu peux utiliser un autotransfo et les alimenter en 180V.
    Elles dureront beaucoup plus longtemps, mais le rendement sera

    sera ignoble.





















    JKB

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Re: Quid des ampoules LED retro ?

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jamais), je suis d'accord.

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Re: Quid des ampoules LED retro ?
Le Wed, 19 Apr 2017 10:55:06 +0200,


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    circuit.






    Je peux te donner d'autres exemples. Le coup typique des











    installations ne duraient que quelques mois avant de tomber en panne.

    JKB

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Re: Quid des ampoules LED retro ?


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non comme un consommable).

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Pourquoi personne ici ne mentionne le cas des bas nylon ?

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Re: Quid des ampoules LED retro ?
Le Wed, 19 Apr 2017 11:48:51 +0200,


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    ne le soit pas. Sauf que dans les faits, l'utilisateur ne remplace





    passer par une interdiction du fonctionnement, mais pour certains
    utilisateurs, c'est la seule chose qui vaille.

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    JKB

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Re: Quid des ampoules LED retro ?



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quoi que ce soit d'autre.
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Re: Quid des ampoules LED retro ?
On 19/04/17 14:08, JKB wrote:

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n'essayent pas de comprendre le sens des mots qu'ils ont sous les yeux.

J'ai eu le cas y a 2j avec un client, avec un sujet infiniment plus








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Re: Quid des ampoules LED retro ?


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Excellent lien qui remet bien des pendules a l'heure.


de quelques heures seulement.

c'est le passage de 110 a 220V ainsi que de 6 a 12V sur les voitures.
Rien que le fait de nettoyer les luminaires a l'occasion des
changements de lampes joue aussi pas mal sur le rendement.  



Re: Quid des ampoules LED retro ?

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Ben oui, sur les voitures anciennes, le 6V avait ses heures de gloire.
Les ampoules ayant un filament plus important, duraient plus longtemps.



tension en bout (chute de tension enligne moins importante), mais
surtout son pourcentage de perte rendait ces ampoules plus "performantes".
Pour le passage 110-220, c'est pareil: filament plus fin, plus fragile.


Les tubes fluorescents aussi ont eu leur heures de gloire, lorsque










Michel


Re: Quid des ampoules LED retro ?

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plus de 30 ans.


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Re: Quid des ampoules LED retro ?
Le Mon, 10 Apr 2017 01:19:22 +0200,


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    On peut faire des ampoules qui dirent beaucoup plus longtemps, mais





    Concernant les ampoules qui claqueraient plus vite aujourd'hui




    Les ampoules n'aiment pas trop.

    JKB

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Re: Quid des ampoules LED retro ?

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Bonjour

particulier au refroidissement de celles ci.
Au minimum un substrat en alu voire des aillettes.


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Re: Quid des ampoules LED retro ?
Le Wed, 12 Apr 2017 11:58:25 +0200,

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    depuis trois ans, RAS.





    JKB

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Re: Quid des ampoules LED retro ?
On 12/04/17 11:58, bilou wrote:
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If computing were an exact science, IT engineers would'nt have work \_o<

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Re: Quid des ampoules LED retro ?
Benoit-Pierre DEMAINE vient de nous annoncer :
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Re: Quid des ampoules LED retro ?
On 16/04/17 20:34, Jo Kerr wrote:



j'attends confirmation de l'auteur.

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Re: Quid des ampoules LED retro ?

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