2 diodes en série

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bonjour



par exemple 10V sur la cathode de la 1ere et la masse


10V ----|<---I----|<------ 0V


Quelle est la tension au point milieu I ?


Re: 2 diodes en série


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    Bonsoir,






    JKB

--  
Si votre demande me parvient en code 29, je vous titiouillerai volontiers


Re: 2 diodes en série



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entre la phase et le neutre du secteur, donc 230V efficace,


La led indique que l'appareil est sous tension ou pas







Re: 2 diodes en série




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    JKB

--  
Si votre demande me parvient en code 29, je vous titiouillerai volontiers


Re: 2 diodes en série





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  https://www.cjoint.com/c/JJCqquyaLm2

Re: 2 diodes en série

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    comparer par exemple des courants Ir.

    JKB

--  
Si votre demande me parvient en code 29, je vous titiouillerai volontiers


Re: 2 diodes en série


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Re: 2 diodes en série
ast wrote:




que.]

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on a de la chance, c'est la  




s, du genre 10 MR. Mais  
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de, le tout
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 la

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ion

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Le montage est correct, tout va bien.

Le courant peut traverser la LED (ou n'importe quel autre composant

ition

.


 la

pour l'endommager.


Re: 2 diodes en série

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    Sauf que non. La tension Vrrm de la led est de l'ordre de 5V et celle de la

    courants de fuite). Utiliser un tel montage est hasardeux


    fonctionner, avec d'autres, non.


    clients.

    JKB

--  
Si votre demande me parvient en code 29, je vous titiouillerai volontiers


Re: 2 diodes en série
snipped-for-privacy@hilbert.invalid wrote:

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ondition

les.
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ser la

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de la

?reences de
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s la chute


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Et pourtant.

N'importe quelle jonction, y compris celle de la LED, fonctionne comme  
une diode zener. A une certaine tension il y a claquage. Ce claquage


d'un claquage thermique.


nettement la puissance nominale, supposons 50mW.





able.


s de
volts et le courant de fuite de la diode de protection est largement


1000 fois que la puissance nominale.


chez des
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J'en doute pas. C'est vos clients, ils font ce qu'ils veulent.


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Re: 2 diodes en série

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    Ouvrez un bouquin de physique du semi-conducteur. Une diode Zener de 1W


    puissance dissipable) et revenez nous en parler.

    Je n'y reviendrai pas, vous croyez bien ce que vous voulez.

    JKB

--  
Si votre demande me parvient en code 29, je vous titiouillerai volontiers


Re: 2 diodes en série
snipped-for-privacy@hilbert.invalid wrote:

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 condition

ibles.
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erser la

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e de la

?reences de
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pas la chute


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?
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W

ollez lui

 dans la
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un courant de 50 nA typique.


rien se passer.

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???


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    Ce que je suis en train d'essayer de vous faire comprendre, c'est que le





    le clacage de la jonction. La destruction de la jonction
















    quelqu'un tombe sur ces archives et prenne votre prose au pied de la lettre.

    <EOT>

    JKB

--  
Si votre demande me parvient en code 29, je vous titiouillerai volontiers


Re: 2 diodes en série
snipped-for-privacy@hilbert.invalid wrote:

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t

 condition

rsibles.
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averser la

t
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lle de la


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t pas la chute


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me

?
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 1W

 collez lui

er dans la
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le

me thermique

e d'avalanche est un

peut_ aussi

ourant

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e des conneries,

ique


Oui, vous racontez des conneries. Souvent d'ailleurs, pas uniquement
concernant les diodes.


ici c'est un forum piblic.


age, mais

aites

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 sa tension

urez


Non.








il est propre



r que
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ettre.


 une

?rie ?

Bon, si vous n'avez pas une alim de labo de 100V prenez 30V ou 60V.

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Re: 2 diodes en série

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  Oui, il aligne de termes techniques qui n'ont au final aucun sens.
  De l?esbroufe' pour faire croire qu'il s'y connait.


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discours, ne se rendant pas compte des inepties qu'il contient.





Re: 2 diodes en série






votre part.
Ne me dites pas que vous venez sur ce NG uniquement pour basher les
personnes qui y contribuent.



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[...]







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insulter les autres).

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Je te remercie de ta sollicitude.





Une chose que les machines m'ont appris : reconnaitre que l'expression  
"l'erreur est humaine" est juste.



Alors, soit, je suis un gros con, mais j'essaye autant que je peux de  





<citation>



Vrmax en fonction de la seconde diode.
<citation/>

Toi as-tu compris ?
Si c'est le cas j'aimerais que tu m'explique, parce que moi j'ai pas  

et de la diode !






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Re: 2 diodes en série
alrote wrote:
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scours  

ure.


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J'ai rarement vu une personne qui se trompe sur le fond, sur la forme


Mais bon.



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