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Re: Alimentation ordinateur en panne

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Re: Alimentation ordinateur en panne
Le Sun, 8 Dec 2019 16:12:16 +0100,


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    JKB

--  


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


Le redresseurs ou le transistor de hachage (sur radiateur) n'ont pas eu  
le temps de chauffer.

Et puis claquer un 10 ou 16A, il faut que ce soit franc.





315VDC qui avec un peu de malchance peuvent faire 630VDC.


chose.


faut le dessouder, attention au sens au remontage).







Le Fri, 7 Dec 2018 23:04:28 +0100,





crament de suite.


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




     JKB







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Re: Alimentation ordinateur en panne
On 10/12/18 11:38, Look165 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
On 07/12/18 22:39, Serge Nazarian 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

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110V ?

Re: Alimentation ordinateur en panne

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changer le bloc entier.

Re: Alimentation ordinateur en panne
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Re : Alimentation ordinateur en panne






l'alimentation, pas pour l'ordinateur!

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Re: Re : Alimentation ordinateur en panne



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320V, ce n'est pas ce que j'appellerais de la HT  ;o)

Re: Re : Alimentation ordinateur en panne




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--  
capfree -

Re: Re : Alimentation ordinateur en panne
Le Mon, 9 Dec 2019 01:26:54 +0100,





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    plupart du temps sans isolation galvanique jusqu'au transfo.

    JKB

--  


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Re: Alimentation ordinateur en panne


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ferme !!)

du coup j'ai appris beaucoup de choses...

Re: Alimentation ordinateur en panne
On 08/12/2019 17:26, Aegidius wrote:




Re: Alimentation ordinateur en panne

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Re: Alimentation ordinateur en panne
Le Fri, 6 Dec 2019 17:12:02 +0100,


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    genre de question, il vaut mieux qu'il ne touche pas une






    du coin.


    par quelqu'un qui sait exactement ce qu'il fait. Pas en changeant au
    hasard un condensateur. Et certaines alimentations sont tellement


    JKB

--  


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Re: Alimentation ordinateur en panne


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Bonjour !

Peu de gens le savent mais la plupart du temps il ne faut absolument pas  
faire ce que vous avez fait innocemment i.e. un cycle ON/OFF rapide  








le cycle soft-start ...



"courants de tramway"


Destruction des semi-conducteurs ... au mieux ! Fort heureusement dans  

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Ok bien vu. Regarde le MOSFET(ou les BJT), les Diodes, et le Transfo  

en HORS TENSION n'est ce pas !!!
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Cf. Ci-dessus mais HORS TENSION stp hein !
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H.

Re: Alimentation ordinateur en panne
Le Sun, 8 Dec 2019 16:49:00 +0100,



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    vraiment merdouillique.

    JKB

--  


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

Re: Alimentation ordinateur en panne





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Bonsoir JKB,




Dans ce domaine les concepteurs doivent prendre en compte plein de  






MOSFETs de puissance,
le monitoring constant de Vout/Iout de l'alim,
la protection en courant/puissance sur des CC ou des surcharges  


puissance,

excessives,
UVLO et OVP (Under Voltage Prot et Over Voltage Prot),

etc.




primaire (14V ... 28Vnom ...80V @400Hznom).


Suisse - ! Ce qui me fait prendre l'avion en confiance ... au moins sur  
les appareils Airbus.

H.

Re: Alimentation ordinateur en panne
Le Sun, 8 Dec 2019 18:22:49 +0100,






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    Objection. Une alimentation de PC correcte, c'est entre 100 et 150



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    Je te file mon billet que tous les circuits utilisant un TL5001 de





    Donc ces alimentations prennent des circuits directement dans les
    datasheets ou les applications designs et advienne que pourra.




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    erreurs de conception, ce que je vois n'incite pas la confiance.

    De temps en temps, je vois de la belle "horlogerie suisse", mais
    c'est de plus ne plus rare.

    JKB

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