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Re: Alimentation ordinateur en panne



crament de suite.

met sur la voie.




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Re: Alimentation ordinateur en panne




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Michel

Re : Alimentation ordinateur en panne












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Tu n'as pas du en cramer souvent! Le semi-conducteur grand public est  


grille.


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en effet pouvoir trouver des traces visuelles.

Pour finir, un fusible peut ne pas du tout avoir l'apparence d'un fusible  
pour ne pas que des petits malins le remplacent par un morceau de fil.  




prendre une tension, surtout de plus de 300V)

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Re: Re : Alimentation ordinateur en panne
Lorsqu'une piste chauffe, c'est le FR4 qui pue.


en cc.

Quant au fusible, certains fabricants utilise un bout de piste savamment  




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Re : Re : Alimentation ordinateur en panne
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avec une goutte de soudure.


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Re: Re : Alimentation ordinateur en panne
Le Sat, 8 Dec 2018 23:54:56 +0100,

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    JKB

--  


=> http://grincheux.de-charybde-en-scylla.fr
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Re: Re : Alimentation ordinateur en panne



temps de chauffer dehors.


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Re: Re : Alimentation ordinateur en panne
On 08/12/18 23:37, ddore wrote:




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If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Alimentation ordinateur en panne
Le Fri, 7 Dec 2018 23:04:28 +0100,




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    J'ai encore fait cramer pas plus tard qu'hier un BC337 en raison




    JKB

Re: Alimentation ordinateur en panne
JKB wrote:

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Den

Re: Alimentation ordinateur en panne
Le Sun, 09 Dec 2018 23:28:56 +0100,

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    Un driver de mosfet (canal P) avec bootstrap et puits de courant

    faire travailler un driver BC337/327 avec une tension de repos de plus













    puissante pour avoir la paix et faire travailler les deux



    composants fournis sur l'un des datasheet (design autour du TL5001


    pouvait pas fonctionner, ils ne savent plus ce qu'est un puits de
    courant avec un FET...). Il ne faut pas avoir peur de faire passer
    pas loin de 10mA dans la sortie Vout de commande sous peine d'avoir
    un rendement moisi.
    

    a de temps en temps des erreurs qui se rajoutent.

    JKB

--  


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Re: Alimentation ordinateur en panne
JKB wrote:
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Couic...

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pour l'avenir (euh... je ne voulais pas lancer un troll !)

Den



Re: Alimentation ordinateur en panne








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Re: Alimentation ordinateur en panne
Le Mon, 10 Dec 2018 15:44:57 +0100,




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    JKB

--  


=> http://grincheux.de-charybde-en-scylla.fr
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Re: Alimentation ordinateur en panne
Le Mon, 10 Dec 2018 14:21:48 +0100,

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    connexions. Une paille !

    JKB

--  


=> http://grincheux.de-charybde-en-scylla.fr
=> http://loubardes.de-charybde-en-scylla.fr

Re: Alimentation ordinateur en panne
On 10/12/18 12:16, JKB wrote:
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http://www.vipress.net/matrices-de-transistors-dmos-a-fonction-stockage-de-donnees/
il parle de rendement

http://forum.elektor.com/viewtopic.php?f22%3119&t25%35785
il utilise, sans expliquer

https://fr.wikipedia.org/wiki/Transistor_%C3%A0_effet_de_champ



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If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Alimentation ordinateur en panne

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https://forums.futura-sciences.com/electronique/683754-solution-charge-electronique-puits-de-courant.html



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capfree -

Re: Alimentation ordinateur en panne
Le Tue, 11 Dec 2018 08:33:53 +0100,

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    pincement pour avoir un courant constant quelle que soit la


           |
              |
       +---+  D
       |
       |
    +->+ G
    |  |
    |  +---+  S
    |      |
    |      R
    |      R
    |      |
    +------+
           |




    triode et le fonctionnement pentode) en commandant la grille 2 au
    lieu de la grille 1.







    N sur la masse du transfo.

    JKB

--  


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Re: Alimentation ordinateur en panne
On 12/12/18 09:36, JKB wrote:

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--  

If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
We've slightly trimmed the long signature. Click to see the full one.
Re: Alimentation ordinateur en panne
Le Wed, 12 Dec 2018 14:06:04 +0100,

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